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@ -1020,6 +1020,7 @@
- LATER SQL - LATER SQL
- purpose and importance of SQL. - purpose and importance of SQL.
- SQL is a transform-oriented language with 2 - SQL is a transform-oriented language with 2
collapsed:: true
major components: #flashcard major components: #flashcard
- A DDL for defining database structure. - A DDL for defining database structure.
- Create table - Create table
@ -1029,6 +1030,11 @@
- Delete - Delete
- update - update
- Select - Select
- Importance:
- it is non-procedural - you specify what
information you require, rather than how to get it;
- it is essentially free-format.
- easy to learn
- retrieve data from database and formulate queries using SELECT and - retrieve data from database and formulate queries using SELECT and
- Use compound WHERE conditions. - Use compound WHERE conditions.
- Sort query results using ORDER BY. - Sort query results using ORDER BY.