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Section 2 Question and answers 100% correct 2024

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Section 2 Question and answers 100% correct 2024 Queries The Movie table has the following columns: ID - positive integer Title - variable-length string Genre - variable-length string RatingCode - variable-length string Year - integer Write ALTER statements to make the followin...

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  • September 1, 2024
  • 17
  • 2024/2025
  • Exam (elaborations)
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  • section 2
  • section 2 question and answers 100 correct 2024

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Section 2
An SQL ______ is a complete command composed of one or more clauses. A
______ groups SQL keywords like SELECT, FROM, and WHERE with table
names like City, column names like Name, and conditions like Population >
100000
statement, clause




The SQL language is divided into five sublanguages:
Data Definition Language (DDL) defines the structure of the database.


Data Query Language (DQL) retrieves data from the database.


Data Manipulation Language (DML) manipulates data stored in a database.


Data Control Language (DCL) controls database user access.


Data Transaction Language (DTL) manages database transactions.




The ______ DATABASE statement creates a new database. Once a
database is created, tables can be added to the database. The ____
DATABASE statement deletes the database, including all tables in the
database.

,CREATE, DROP




The _____ statement provides database users and administrators with
information about databases, the database contents (tables, columns, etc.),
and server status information.
SHOW


Commonly used SHOW statements include:


SHOW DATABASES lists databases available in the database system.
SHOW TABLES lists tables available in the currently selected database.
SHOW COLUMNS lists columns available in a specific table named by a
FROM clause.
SHOW CREATE TABLE shows the CREATE TABLE statement for a given
table.




The ____ statement selects a database and is required to show information
about tables within a specific database.
USE




SHOW AND USE EXAMPLE

, When creating a table, every table column must be assigned a data type.
Common data types include: integer, decimal, date and time, and character.
Most databases allow integer and decimal numbers to be signed or unsigned.


A ____ number is a number that may be negative.


An _______ number is a number that cannot be negative.


signed, unsigned




Integer Types




Decimal Types




Date and Time Types




Character Types




T or F?


The statement DROP Employee; deletes the Employee table.
False

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