SQL Cheat Sheet

SQL Facts  SQL stands for Structured Query Language  SQL is pronounced “sequel”  SQL is declarative language  SQL is used to access & manipulate data in databases  Top SQL DBs are MS SQL Server, Oracle, DB2, and MySQL SQL Commands Categories Data Query... More

SQL Facts  SQL stands for Structured Query Language  SQL is pronounced “sequel”  SQL is declarative language  SQL is used to access & manipulate data in databases  Top SQL DBs are MS SQL Server, Oracle, DB2, and MySQL SQL Commands Categories Data Query Language (DQL)  SELECT - Retrieve data from table(s) Data Manipulation Language (DML)  INSERT - Insert data into db table  UPDATE - Update data in db table  DELETE - Delete data from table Data Definition Language (DDL)  CREATE - Create db object (table, view, etc.)  ALTER - Modify db object (table, view, etc.)  DROP - Delete db object (table, view, etc.) Data Control Language (DCL)  GRANT - Assign privilege  REVOKE - remove privilege Database Definitions  RDBMS (Relational Database Management System) – Software that stores and manipulates data arranged in relational database tables.  Table – A set of data arranged in columns and rows. The columns represent characteristics of stored data and the rows represent actual data Less