Sql Welcome Back Fall 2009 1Presentation Transcript
06/24/09 Mrs. Terry Yoast
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 06/24/09 Mrs. Terry Yoast
Where would I use it?
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!