SQL Pronounced “Sequel" 06/24/09 Mrs. Terry Yoast
SQL 06/24/09 Mrs. Terry Yoast What do the letters mean? SQL stands for Structured Query Language. What is it used for? SQL is used to communicate with a database Why would I want to learn it? According to ANSI (American National Standards Institute), it is the standard language for relational database management systems.
SQL statements are used to perform tasks such as update data on a database, or retrieve data from a database. Some common relational database management systems that use SQL are: Oracle, Sybase, Microsoft SQL Server, Access, Ingres, etc.
So if I know SQL, I then know Oracle?
Although most database systems use SQL, most of them also have their own additional proprietary extensions that are usually only used on their system.
SQL 06/24/09 Mrs. Terry Yoast The standard SQL commands such as "Select", "Insert", "Update", "Delete", "Create", and "Drop" can be used to accomplish almost everything that one needs to do with a database. So that’s all I have to learn?
SQL 06/24/09 Mrs. Terry Yoast We will learn at least the following basic commands: SELECT WHERE INSERT UPDATE DELETE ORDER BY AND & OR IN BETWEEN ALIASES JOIN UNION CREATE DROP ALTER FUNCTIONS GROUP BY SELECT INTO CREATE VIEW TRIGGERS
SQL 06/24/09 Mrs. Terry Yoast So that’s all I have to learn? I did mention basic commands! Join, as an example has many variations.
06/24/09 Mrs. Terry Yoast How we will use our time:
SQL 06/24/09 Mrs. Terry Yoast What if I need help? Always use me as your first source. Articles on the Internet are not always updated with the current changes. You may also look for assistance on my wiki: http://tyoastos.pbwiki.com/
SQL 06/24/09 Mrs. Terry Yoast If you have ever used an Access Database you have inadvertently used SQL! So that I know I haven’t scared you away from this course, please ask questions!