SQL is a standard language for accessing and manipulating databases. It allows users to retrieve, insert, update, and delete data as well as create, modify and delete tables. The main SQL commands are grouped into four categories: data definition language for creating/modifying database structures, data manipulation language for interacting with data, transaction control language for managing transactions, and data control language for security. Common SQL commands include CREATE, SELECT, INSERT, UPDATE, DELETE, ALTER, and DROP.

1. SQLINTRODUCTION TO SQLWhat is SQL?SQL stands for Structured Query Language

2. SQL lets you access and manipulate databases

3. SQL is an ANSI (American National Standards Institute) standard

4. It is the most commonly used relational database language today.

5. SQL works with a variety of different fourth-generation (4GL) programming languages, such as Visual Basic.What Can SQL do?SQL can execute queries against a database

6. SQL can retrieve data from a database

7. SQL can insert records in a database

8. SQL can update records in a database

9. SQL can delete records from a database

10. SQL can create new databases

11. SQL can create new tables in a database

12. SQL can create stored procedures in a database

13. SQL can create views in a database

14. SQL can set permissions on tables, procedures, and viewsSQL is used for:Data Manipulation

15. Data Definition

16. Data Administration

17. All are expressed as an SQL statement or command.SQL REQUIREMENTS:SQL Must be embedded in a programming language, or used with a 4GL like VB2. SQL is a free form language so there is no limit to the the number of words per line or fixed line break.3. Syntax statements, words or phrases are always in lower case; keywords are in uppercase.

18. Using SQL in Your Web SiteTo build a web site that shows some data from a database, you will need the following:An RDBMS database program (i.e. MS Access, SQL Server, MySQL)

19. A server-side scripting language, like PHP or ASP