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21 Cards in this Set
- Front
- Back
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DDL (Data Definition Language) |
Statements used for creating tables, relationships, and other structures. |
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DML (Data Manipulation Language) |
Statements used for querying, inserting, modifying, and deleting data. |
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SQL / PSM (Persistent Stored Modules) |
Extend sql by adding procedural programming capabilities. |
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TCL (Transaction Control Language) |
Statements used to mark transaction boundaries and control transaction behavior. |
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DCL (Data Control Language) |
Statements used to grant database permissions to users and groups, or to revoke them. |
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CREATE TABLE NewTableName ( |
Command for creating tables structures. |
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CONSTRAINT |
Keyword to identify table constraints and primary keys. |
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SQL INSERT |
A command for adding data to a relation. |
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SQL SELECT |
Specifies which columns are to be listed in a query. |
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SQL FROM |
Specifies which tables are to be used in a query. |
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SQL WHERE |
Specifies which rows are to be listed in the query results. |
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DISTINCT |
A keyword that tells DBMS to check for and eliminate duplicate rows. |
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SQL asterisk (✳) after the keyword SELECT |
Another way to specify all the columns of a table. |
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ASC / DESC |
Keywords specifying ascending and descending order when necessary. |
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GROUP BY |
A clause that allows to group rows by common values. |
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SQL UPDATE... SET |
Statement that allows to modify the values of existing data. |
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SQL MERGE |
Statement that combines the INSERT and UPDATE statements. |
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SQL DELETE |
Statement that allows to eliminate rows. |
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SQL DROP TABLE |
A statement that drops the table structure along with all of its data. |
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ALTER TABLE |
Statement that allows you to add, modify, and drop columns and constraints. |
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TRUNCATE TABLE |
Statement that allows you to remove all data from a table while leaving its structure in the database. |
