enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Data definition language - Wikipedia

    en.wikipedia.org/wiki/Data_definition_language

    In the context of SQL, data definition or data description language (DDL) is a syntax for creating and modifying database objects such as tables, indices, and users. DDL statements are similar to a computer programming language for defining data structures, especially database schemas. Common examples of DDL statements include CREATE, ALTER ...

  3. Database object - Wikipedia

    en.wikipedia.org/wiki/Database_object

    Application- or user-specific database objects in relational databases are usually created with data definition language (DDL) commands, which in SQL for example can be CREATE, ALTER and DROP. [4] [5] Rows or tuples from the database can represent objects in the sense of object-oriented programming, but are not considered database objects. [6]

  4. SQL syntax - Wikipedia

    en.wikipedia.org/wiki/SQL_syntax

    The Data Definition Language (DDL) manages table and index structure. The most basic items of DDL are the CREATE, ALTER, RENAME, DROP and TRUNCATE statements: CREATE creates an object (a table, for example) in the database, e.g.:

  5. Data query language - Wikipedia

    en.wikipedia.org/wiki/Data_query_language

    The purpose of DQL commands is to get the schema relation based on the query passed to it. Although often considered part of DML, the SQL SELECT statement is strictly speaking an example of DQL. When adding FROM or WHERE data manipulators to the SELECT statement the statement is then considered part of the DML.

  6. Data control language - Wikipedia

    en.wikipedia.org/wiki/Data_Control_Language

    Data Definition Language (DDL) Data Control Language (DCL [2]) Transaction Control Language (TCL) DCL commands are used for access control and permission management for users in the database. With them we can easily allow or deny some actions for users on the tables or records (row level security). DCL commands are: GRANT

  7. PL/SQL - Wikipedia

    en.wikipedia.org/wiki/PL/SQL

    For example: <<label>>-- this is ... The RAISE command has the syntax: ... Data Definition Language (DDL) requires more complex "Dynamic SQL" statements in the PL/SQL ...

  8. This practice in the health insurance industry may have ... - AOL

    www.aol.com/finance/practice-health-insurance...

    For example, large language models could be used to analyze difference datasets to help predict who might need services and intervene before a situation turns into a health crisis.

  9. Database trigger - Wikipedia

    en.wikipedia.org/wiki/Database_trigger

    As of version 8.0, they allow for DDL (Data Definition Language) triggers and for DML (Data Manipulation Language) triggers. They also allow either type of DDL trigger (AFTER or BEFORE) to be used to define triggers. They are created by using the clause CREATE TRIGGER and deleted by using the clause DROP TRIGGER.