SQL Flashcards

1
Q

DDL

A

Data Definition Language

Includes create database objects (table, index, view) and commands to define access rights

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2
Q

DML

A

Data Manipulation Language

Includes insert, update, delete, and retrieve.

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3
Q

Query

A

A SQL statement that must be executed (question or action)

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4
Q

Authentication

A

Process DBMS uses to verify that only registered users access the database

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5
Q

Schema

A

Logical group of database objects (tables and indexes) that are related to each other, usually belonging to a single user / application. Multiple schemas can be associated with a single database.

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6
Q

Reserved Words

A

Words by SQL to perform specific functions. They should not be used in column or table names.

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7
Q

Wildcard Character

A

Symbol used as a substitute for other characters or commands.

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8
Q

Subquery

A

Query embedded in another query. The innermost query is always executed first.
aka Nested Query / Inner Query

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9
Q

CRUD

A

Create Read Update Delete

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10
Q

Alias

A

Alternate name given to a table or column

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11
Q

Cascading Order Sequence

A

Multilevel ordered sequence

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12
Q

View

A

Virtual table based on a SELECT query

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13
Q

Base Table

A

Table that a view is based on

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14
Q

Batch Update Routine

A

Multiple transactions pooled into a single batch to update a master table

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15
Q

Updatable View

A

Can be used to update attributes in any base table(s) used in the view

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