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HTML BASIC TAGS
The title is what is displayed on the upper left corner of your browser when you view a web page. For example, right now you can see "Basic Tags: html, head, title, meta, body" there. That is the title of this page. The title tag is important when it comes to search engine ranking. Many of the search engines pay special attention tothe text in
FIRST NORMAL FORM (1NF) A database is in first normal form if it satisfies the following conditions: Contains only atomic values. There are no repeating groups. An atomic value is a value that cannot be divided. For example, in the table shown below, the values in the column in the first row can be divided into "red" and "green", henceis not
SQL - SELECT UNIQUE
SQL > SQL Commands > Select Unique. The SELECT UNIQUE construct is an Oracle-only SQL statement. It is equivalent to SELECT DISTINCT. Syntax. The syntax for SELECT UNIQUE is as follows: LIST OF US AREA CODES Area Code Listing From 201 to 299. This site lists all area codes accessible from the U.S. and Canada, the state the area code belongs to, and the time zone of all area codes. This page lists all area codes starting with 2. Please click on the first digit of the area code if you need to find information on another area code: SECOND NORMAL FORM (2NF) 2nd Normal Form Definition. A database is in second normal form if it satisfies the following conditions: It is in first normal form. All non-key attributes are fully functional dependent on the primary key. In a table, if attribute B is functionally dependent on A, but is not functionally dependent on a proper subset of A, then B is considered THIRD NORMAL FORM (3NF) 3rd Normal Form Definition. A database is in third normal form if it satisfies the following conditions: It is in second normal form. There is no transitive functional dependency. By transitive functional dependency, we mean we have the following relationships in the table: A is functionally dependent on B, and B is functionally dependent onC.
1KEYDATA - FREE ONLINE PROGRAMMING TUTORIALSCSS TUTORIALTUTORIAL DE SQLABOUTCREATE A WEBSITEBLOGPHP TUTORIAL This tutorial aims to help beginners learn the basic concepts in CSS. PHP is a server-side scripting language. This tutorial helps beginners learn the essential building blocks of PHP. An HTML tutorial site aimed to teach beginners the building blocks of HTML through examples. Normalization is an important concept in database design. ALPHABETICAL LIST OF 50 STATESARIZONANBASTATE CAPITALLOUISIANAOKLAHOMAOHIO Alphabetical List of 50 States. Please click on the state you are interested in to view that state's information: Each page includes the following: State Abbreviation: The two-letter abbreviation for each state. State Capital: The capital city of the state. State Size: SQL - WITH CLAUSE EXAMPLES The usage of WITH clause is very similar to creating tables. When you create a table, you give it a name. Similarly, when you use the WITH clause, you also give it a name, and this name essentially acts like a table name in the main SQL statement.. Because WITH does not create a table or a view, the object associated with the WITH statement disappears after the main SQL statement is executed SQL - CREATE VIEW STATEMENT SQL > Data Definition Language (DDL) > Create View Statement. Views can be considered as virtual tables. Generally speaking, a table has a set of definition, and it physically stores the data. A view also has a set of definitions, which is build on top of table(s) or otherview(s), and it
HTML BASIC TAGS
The title is what is displayed on the upper left corner of your browser when you view a web page. For example, right now you can see "Basic Tags: html, head, title, meta, body" there. That is the title of this page. The title tag is important when it comes to search engine ranking. Many of the search engines pay special attention tothe text in
FIRST NORMAL FORM (1NF) A database is in first normal form if it satisfies the following conditions: Contains only atomic values. There are no repeating groups. An atomic value is a value that cannot be divided. For example, in the table shown below, the values in the column in the first row can be divided into "red" and "green", henceis not
SQL - SELECT UNIQUE
SQL > SQL Commands > Select Unique. The SELECT UNIQUE construct is an Oracle-only SQL statement. It is equivalent to SELECT DISTINCT. Syntax. The syntax for SELECT UNIQUE is as follows: LIST OF US AREA CODES Area Code Listing From 201 to 299. This site lists all area codes accessible from the U.S. and Canada, the state the area code belongs to, and the time zone of all area codes. This page lists all area codes starting with 2. Please click on the first digit of the area code if you need to find information on another area code: SECOND NORMAL FORM (2NF) 2nd Normal Form Definition. A database is in second normal form if it satisfies the following conditions: It is in first normal form. All non-key attributes are fully functional dependent on the primary key. In a table, if attribute B is functionally dependent on A, but is not functionally dependent on a proper subset of A, then B is considered THIRD NORMAL FORM (3NF) 3rd Normal Form Definition. A database is in third normal form if it satisfies the following conditions: It is in second normal form. There is no transitive functional dependency. By transitive functional dependency, we mean we have the following relationships in the table: A is functionally dependent on B, and B is functionally dependent onC.
SQL - INLINE VIEW
SQL > Advanced SQL > Inline View. An inline view is a SELECT statement in the FROM clause. As mentioned in the View section, a view is a virtual table that has the characteristics of a table yet does not hold any actual data. In an inline view construct, instead of specifying table name(s) after the FROM keyword, the source of the data actually comes from the inline view. SQL TO_DATE FUNCTION The syntax of this function is as follows: TO_DATE ( String, , ) The most important parameter is . Valid values are as follows: Format. Description. AD. A.D. AD indicator to use in conjunction with the year. SQL - AVG FUNCTION - CALCULATE AVERAGE IN SQL Assume that sales tax is 10% of the sales amount, we use the following SQL statement to get the average sales tax amount: SELECT AVG (Sales*0.1) FROM Store_Information; Result: AVG (Sales*0.1) 68.75. SQL will first calculate "Sales*0.1" and then apply the AVG function to the result for the final answer.HTML COMMANDS
HTML Commands. Link. Bold the text within the tag. The information within this tag is the body of the HTML document. Line break. Center the text within the tag. Specify the font type, size, and color for the text within the tag. Specifies the properties within eachFACT TABLE TYPES
The purpose of this table is to record the sales amount for each product in each store on a daily basis. Sales_Amount is the fact. In this case, Sales_Amount is an additive fact, because you can sum up this fact along any of the three dimensions present in the fact table -- date, store, and product. For example, the sum of Sales_Amount for all 7 days in a week represents the total sales amount TYPE 3 SLOWLY CHANGING DIMENSION Disadvantages : - Type 3 will not be able to keep all history where an attribute is changed more than once. For example, if Christina later moves to Texas on December 15, 2003, the California information will be lost. Usage : Type 3 is rarely used in actual practice. When to use Type 3 : Type III slowly changing dimension should only be used SQL - DROP CONSTRAINT SQL > ALTER TABLE > Drop Constraint Syntax. Constraints can be placed on a table to limit the type of data that can go into a table. Since we can specify constraints on a table, there needs to be a way to remove this constraint as well. In SQL, this is done via the ALTER TABLE statement.. The SQL syntax to remove a constraint from a tableis,
SECOND NORMAL FORM (2NF) 2nd Normal Form Definition. A database is in second normal form if it satisfies the following conditions: It is in first normal form. All non-key attributes are fully functional dependent on the primary key. In a table, if attribute B is functionally dependent on A, but is not functionally dependent on a proper subset of A, then B is consideredMASSACHUSETTS FACTS
Facts about Massachusetts, including the capital, number of electoral votes, state symbols, popular tourist attractions, famous people, sports teams, fun facts, and more.DELAWARE FACTS
Facts about Delaware, including the capital, number of electoral votes, state symbols, popular tourist attractions, famous people, sports teams, fun facts, and more. 1KEYDATA - FREE ONLINE PROGRAMMING TUTORIALSCSS TUTORIALTUTORIAL DE SQLABOUTCREATE A WEBSITEBLOGPHP TUTORIAL This tutorial aims to help beginners learn the basic concepts in CSS. PHP is a server-side scripting language. This tutorial helps beginners learn the essential building blocks of PHP. An HTML tutorial site aimed to teach beginners the building blocks of HTML through examples. Normalization is an important concept in database design. ALPHABETICAL LIST OF 50 STATESARIZONANBASTATE CAPITALLOUISIANAOKLAHOMAOHIO Alphabetical List of 50 States. Please click on the state you are interested in to view that state's information: Each page includes the following: State Abbreviation: The two-letter abbreviation for each state. State Capital: The capital city of the state. State Size: SQL - WITH CLAUSE EXAMPLES The usage of WITH clause is very similar to creating tables. When you create a table, you give it a name. Similarly, when you use the WITH clause, you also give it a name, and this name essentially acts like a table name in the main SQL statement.. Because WITH does not create a table or a view, the object associated with the WITH statement disappears after the main SQL statement is executed SQL - CREATE VIEW STATEMENT SQL > Data Definition Language (DDL) > Create View Statement. Views can be considered as virtual tables. Generally speaking, a table has a set of definition, and it physically stores the data. A view also has a set of definitions, which is build on top of table(s) or otherview(s), and it
HTML BASIC TAGS
The title is what is displayed on the upper left corner of your browser when you view a web page. For example, right now you can see "Basic Tags: html, head, title, meta, body" there. That is the title of this page. The title tag is important when it comes to search engine ranking. Many of the search engines pay special attention tothe text in
FIRST NORMAL FORM (1NF) A database is in first normal form if it satisfies the following conditions: Contains only atomic values. There are no repeating groups. An atomic value is a value that cannot be divided. For example, in the table shown below, the values in the column in the first row can be divided into "red" and "green", henceis not
SQL - SELECT UNIQUE
SQL > SQL Commands > Select Unique. The SELECT UNIQUE construct is an Oracle-only SQL statement. It is equivalent to SELECT DISTINCT. Syntax. The syntax for SELECT UNIQUE is as follows: LIST OF US AREA CODES Area Code Listing From 201 to 299. This site lists all area codes accessible from the U.S. and Canada, the state the area code belongs to, and the time zone of all area codes. This page lists all area codes starting with 2. Please click on the first digit of the area code if you need to find information on another area code: SECOND NORMAL FORM (2NF) 2nd Normal Form Definition. A database is in second normal form if it satisfies the following conditions: It is in first normal form. All non-key attributes are fully functional dependent on the primary key. In a table, if attribute B is functionally dependent on A, but is not functionally dependent on a proper subset of A, then B is considered THIRD NORMAL FORM (3NF) 3rd Normal Form Definition. A database is in third normal form if it satisfies the following conditions: It is in second normal form. There is no transitive functional dependency. By transitive functional dependency, we mean we have the following relationships in the table: A is functionally dependent on B, and B is functionally dependent onC.
1KEYDATA - FREE ONLINE PROGRAMMING TUTORIALSCSS TUTORIALTUTORIAL DE SQLABOUTCREATE A WEBSITEBLOGPHP TUTORIAL This tutorial aims to help beginners learn the basic concepts in CSS. PHP is a server-side scripting language. This tutorial helps beginners learn the essential building blocks of PHP. An HTML tutorial site aimed to teach beginners the building blocks of HTML through examples. Normalization is an important concept in database design. ALPHABETICAL LIST OF 50 STATESARIZONANBASTATE CAPITALLOUISIANAOKLAHOMAOHIO Alphabetical List of 50 States. Please click on the state you are interested in to view that state's information: Each page includes the following: State Abbreviation: The two-letter abbreviation for each state. State Capital: The capital city of the state. State Size: SQL - WITH CLAUSE EXAMPLES The usage of WITH clause is very similar to creating tables. When you create a table, you give it a name. Similarly, when you use the WITH clause, you also give it a name, and this name essentially acts like a table name in the main SQL statement.. Because WITH does not create a table or a view, the object associated with the WITH statement disappears after the main SQL statement is executed SQL - CREATE VIEW STATEMENT SQL > Data Definition Language (DDL) > Create View Statement. Views can be considered as virtual tables. Generally speaking, a table has a set of definition, and it physically stores the data. A view also has a set of definitions, which is build on top of table(s) or otherview(s), and it
HTML BASIC TAGS
The title is what is displayed on the upper left corner of your browser when you view a web page. For example, right now you can see "Basic Tags: html, head, title, meta, body" there. That is the title of this page. The title tag is important when it comes to search engine ranking. Many of the search engines pay special attention tothe text in
FIRST NORMAL FORM (1NF) A database is in first normal form if it satisfies the following conditions: Contains only atomic values. There are no repeating groups. An atomic value is a value that cannot be divided. For example, in the table shown below, the values in the column in the first row can be divided into "red" and "green", henceis not
SQL - SELECT UNIQUE
SQL > SQL Commands > Select Unique. The SELECT UNIQUE construct is an Oracle-only SQL statement. It is equivalent to SELECT DISTINCT. Syntax. The syntax for SELECT UNIQUE is as follows: LIST OF US AREA CODES Area Code Listing From 201 to 299. This site lists all area codes accessible from the U.S. and Canada, the state the area code belongs to, and the time zone of all area codes. This page lists all area codes starting with 2. Please click on the first digit of the area code if you need to find information on another area code: SECOND NORMAL FORM (2NF) 2nd Normal Form Definition. A database is in second normal form if it satisfies the following conditions: It is in first normal form. All non-key attributes are fully functional dependent on the primary key. In a table, if attribute B is functionally dependent on A, but is not functionally dependent on a proper subset of A, then B is considered THIRD NORMAL FORM (3NF) 3rd Normal Form Definition. A database is in third normal form if it satisfies the following conditions: It is in second normal form. There is no transitive functional dependency. By transitive functional dependency, we mean we have the following relationships in the table: A is functionally dependent on B, and B is functionally dependent onC.
SQL - AVG FUNCTION - CALCULATE AVERAGE IN SQL Assume that sales tax is 10% of the sales amount, we use the following SQL statement to get the average sales tax amount: SELECT AVG (Sales*0.1) FROM Store_Information; Result: AVG (Sales*0.1) 68.75. SQL will first calculate "Sales*0.1" and then apply the AVG function to the result for the final answer.HTML COMMANDS
HTML Commands. Link. Bold the text within the tag. The information within this tag is the body of the HTML document. Line break. Center the text within the tag. Specify the font type, size, and color for the text within the tag. Specifies the properties within each TYPE 3 SLOWLY CHANGING DIMENSION Disadvantages : - Type 3 will not be able to keep all history where an attribute is changed more than once. For example, if Christina later moves to Texas on December 15, 2003, the California information will be lost. Usage : Type 3 is rarely used in actual practice. When to use Type 3 : Type III slowly changing dimension should only be usedFACT TABLE TYPES
The purpose of this table is to record the sales amount for each product in each store on a daily basis. Sales_Amount is the fact. In this case, Sales_Amount is an additive fact, because you can sum up this fact along any of the three dimensions present in the fact table -- date, store, and product. For example, the sum of Sales_Amount for all 7 days in a week represents the total sales amount SECOND NORMAL FORM (2NF) 2nd Normal Form Definition. A database is in second normal form if it satisfies the following conditions: It is in first normal form. All non-key attributes are fully functional dependent on the primary key. In a table, if attribute B is functionally dependent on A, but is not functionally dependent on a proper subset of A, then B is considered SQL - DROP CONSTRAINT SQL > ALTER TABLE > Drop Constraint Syntax. Constraints can be placed on a table to limit the type of data that can go into a table. Since we can specify constraints on a table, there needs to be a way to remove this constraint as well. In SQL, this is done via the ALTER TABLE statement.. The SQL syntax to remove a constraint from a tableis,
SQL - RENAME COLUMN
The exact syntax for each database is as follows: In MySQL, the SQL syntax for ALTER TABLE Rename Column is, ALTER TABLE "table_name". Change "column 1" "column 2" ; In Oracle, the syntax is, ALTER TABLE "table_name". RENAME COLUMN "column 1" TO "column 2"; Let's look at the example. Assuming our starting point is the CustomerMASSACHUSETTS FACTS
Facts about Massachusetts, including the capital, number of electoral votes, state symbols, popular tourist attractions, famous people, sports teams, fun facts, and more.DELAWARE FACTS
Facts about Delaware, including the capital, number of electoral votes, state symbols, popular tourist attractions, famous people, sports teams, fun facts, and more. SQL POURCENTAGE DU TOTAL Pour afficher le pourcentage du total sous SQL, il est nécessaire de se reporter aux concepts que nous avons utilisés pour le rang / le cumul, en plus de la sous-requête. À la différence de ce que nous avons vu dans la section Sous-requête de SQL, nous allons utiliser ici la sous-requête en tant que partie de SELECT.Utilisons un exemplepour illustrer.
1KEYDATA - FREE ONLINE PROGRAMMING TUTORIALSCSS TUTORIALTUTORIAL DE SQLABOUTCREATE A WEBSITEBLOGPHP TUTORIAL This tutorial aims to help beginners learn the basic concepts in CSS. PHP is a server-side scripting language. This tutorial helps beginners learn the essential building blocks of PHP. An HTML tutorial site aimed to teach beginners the building blocks of HTML through examples. Normalization is an important concept in database design. SQL - WITH CLAUSE EXAMPLES The usage of WITH clause is very similar to creating tables. When you create a table, you give it a name. Similarly, when you use the WITH clause, you also give it a name, and this name essentially acts like a table name in the main SQL statement.. Because WITH does not create a table or a view, the object associated with the WITH statement disappears after the main SQL statement is executedHTML BASIC TAGS
The title is what is displayed on the upper left corner of your browser when you view a web page. For example, right now you can see "Basic Tags: html, head, title, meta, body" there. That is the title of this page. The title tag is important when it comes to search engine ranking. Many of the search engines pay special attention tothe text in
TYPE 2 SLOWLY CHANGING DIMENSION Type 2 Slowly Changing Dimension. In Type 2 Slowly Changing Dimension, a new record is added to the table to represent the new information. Therefore, both the original and the new record will be present. The new record gets its own primary key. In our example, recall we originally have the following table: SQL - CREATE VIEW STATEMENT SQL > Data Definition Language (DDL) > Create View Statement. Views can be considered as virtual tables. Generally speaking, a table has a set of definition, and it physically stores the data. A view also has a set of definitions, which is build on top of table(s) or otherview(s), and it
SQL - ADD INDEX
SQL > ALTER TABLE > Add Index Syntax. Sometimes after a table has been created in a database, we find that it is advantageous to add an index to that table to speed up queries involving this table (to understand what an index is and how it can help speed up SQL queries, please see the INDEX section). To do this in SQL, we specify that we want to change the table structure via the ALTER TABLE DATA WAREHOUSE TEAM SELECTION The pros of hiring permanent employees are: 1. They are less expensive. With hourly rates for experienced data warehousing professionals running from $100/hr and up, and even more for Big-4 or vendor consultants, hiring permanent employees is a much SQL - AVG FUNCTION - CALCULATE AVERAGE IN SQL Assume that sales tax is 10% of the sales amount, we use the following SQL statement to get the average sales tax amount: SELECT AVG (Sales*0.1) FROM Store_Information; Result: AVG (Sales*0.1) 68.75. SQL will first calculate "Sales*0.1" and then apply the AVG function to the result for the final answer. TYPE 1 SLOWLY CHANGING DIMENSION For example, in this case, the company would not be able to know that Christina lived in Illinois before. Usage : About 50% of the time. When to use Type 1 : Type 1 slowly changing dimension should be used when it is not necessary for the data warehouse to keep track of historical changes. Next Section: Type 2 Slowly Changing Dimension. LIST OF US AREA CODES Area Code Listing From 201 to 299. This site lists all area codes accessible from the U.S. and Canada, the state the area code belongs to, and the time zone of all area codes. This page lists all area codes starting with 2. Please click on the first digit of the area code if you need to find information on another area code: 1KEYDATA - FREE ONLINE PROGRAMMING TUTORIALSCSS TUTORIALTUTORIAL DE SQLABOUTCREATE A WEBSITEBLOGPHP TUTORIAL This tutorial aims to help beginners learn the basic concepts in CSS. PHP is a server-side scripting language. This tutorial helps beginners learn the essential building blocks of PHP. An HTML tutorial site aimed to teach beginners the building blocks of HTML through examples. Normalization is an important concept in database design. SQL - WITH CLAUSE EXAMPLES The usage of WITH clause is very similar to creating tables. When you create a table, you give it a name. Similarly, when you use the WITH clause, you also give it a name, and this name essentially acts like a table name in the main SQL statement.. Because WITH does not create a table or a view, the object associated with the WITH statement disappears after the main SQL statement is executedHTML BASIC TAGS
The title is what is displayed on the upper left corner of your browser when you view a web page. For example, right now you can see "Basic Tags: html, head, title, meta, body" there. That is the title of this page. The title tag is important when it comes to search engine ranking. Many of the search engines pay special attention tothe text in
TYPE 2 SLOWLY CHANGING DIMENSION Type 2 Slowly Changing Dimension. In Type 2 Slowly Changing Dimension, a new record is added to the table to represent the new information. Therefore, both the original and the new record will be present. The new record gets its own primary key. In our example, recall we originally have the following table: SQL - CREATE VIEW STATEMENT SQL > Data Definition Language (DDL) > Create View Statement. Views can be considered as virtual tables. Generally speaking, a table has a set of definition, and it physically stores the data. A view also has a set of definitions, which is build on top of table(s) or otherview(s), and it
SQL - ADD INDEX
SQL > ALTER TABLE > Add Index Syntax. Sometimes after a table has been created in a database, we find that it is advantageous to add an index to that table to speed up queries involving this table (to understand what an index is and how it can help speed up SQL queries, please see the INDEX section). To do this in SQL, we specify that we want to change the table structure via the ALTER TABLE DATA WAREHOUSE TEAM SELECTION The pros of hiring permanent employees are: 1. They are less expensive. With hourly rates for experienced data warehousing professionals running from $100/hr and up, and even more for Big-4 or vendor consultants, hiring permanent employees is a much SQL - AVG FUNCTION - CALCULATE AVERAGE IN SQL Assume that sales tax is 10% of the sales amount, we use the following SQL statement to get the average sales tax amount: SELECT AVG (Sales*0.1) FROM Store_Information; Result: AVG (Sales*0.1) 68.75. SQL will first calculate "Sales*0.1" and then apply the AVG function to the result for the final answer. TYPE 1 SLOWLY CHANGING DIMENSION For example, in this case, the company would not be able to know that Christina lived in Illinois before. Usage : About 50% of the time. When to use Type 1 : Type 1 slowly changing dimension should be used when it is not necessary for the data warehouse to keep track of historical changes. Next Section: Type 2 Slowly Changing Dimension. LIST OF US AREA CODES Area Code Listing From 201 to 299. This site lists all area codes accessible from the U.S. and Canada, the state the area code belongs to, and the time zone of all area codes. This page lists all area codes starting with 2. Please click on the first digit of the area code if you need to find information on another area code:SQL QUIZ - 1KEYDATA
SQL > SQL Quiz. Take this 25-question, multiple-choice quiz to see if you have a good understanding of SQL. Questions 1-10 use the followingtable:
SQL - CALCULATE MEDIAN group by a1.Name, a1.Sales. order by a1.Sales desc) a3. WHERE Rank = (SELECT (COUNT (*)+1) DIV 2 FROM Total_Sales); Result: Median. 20. You will find that Lines 2-6 are the same as how we find the rank of each row. Line 7 finds the "middle" rank. DIV is the way to find the quotient in MySQL, the exact way to obtain the quotient may bedifferent
SQL - AVG FUNCTION - CALCULATE AVERAGE IN SQL Assume that sales tax is 10% of the sales amount, we use the following SQL statement to get the average sales tax amount: SELECT AVG (Sales*0.1) FROM Store_Information; Result: AVG (Sales*0.1) 68.75. SQL will first calculate "Sales*0.1" and then apply the AVG function to the result for the final answer. SQL TO_DATE FUNCTION The syntax of this function is as follows: TO_DATE ( String, , ) The most important parameter is . Valid values are as follows: Format. Description. AD. A.D. AD indicator to use in conjunction with the year. SQL - UPDATE STATEMENT We notice that the sales for Los Angeles on Jan-08-1999 is actually $500 instead of $300, and that particular entry needs to be updated. To do so, we use the following SQL query: UPDATE Store_Information. SET Sales = 500. WHERE Store_Name = 'Los Angeles'. AND Txn_Date = 'Jan-08-1999'; The resulting table would look like. SQL - CALCULATE PERCENT TO TOTAL SQL > Advanced SQL > Percent To Total. To display percent to total in SQL, we want to leverage the ideas we used for rank/running total plus subquery. Different from what we saw in the SQL Subquery section, here we want to use the subquery as part of the SELECT.Let's use an exampleto illustrate.
SQL - SELECT UNIQUE
SQL > SQL Commands > Select Unique. The SELECT UNIQUE construct is an Oracle-only SQL statement. It is equivalent to SELECT DISTINCT. Syntax. The syntax for SELECT UNIQUE is as follows:ADVANCED SQL
This section shows advanced SQL concepts, as well as how Structured Queery Language can be used for some of the more complex calculations. LIST OF US AREA CODES Area Code Listing From 201 to 299. This site lists all area codes accessible from the U.S. and Canada, the state the area code belongs to, and the time zone of all area codes. This page lists all area codes starting with 2. Please click on the first digit of the area code if you need to find information on another area code:MASSACHUSETTS FACTS
Facts about Massachusetts, including the capital, number of electoral votes, state symbols, popular tourist attractions, famous people, sports teams, fun facts, and more.Cookie Policy
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An HTML tutorial site aimed to teach beginners the building blocks of HTML through examples. DATABASE NORMALIZATION Normalization is an important concept in database design. This tutorial discusses the common forms of normalization.BLOG
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