27 Questions
What is the purpose of the DEFAULT clause in a CREATE TABLE statement?
To define a default value for a column when no value is specified
What type of expression can be used to specify a default value in a DEFAULT clause?
A constant, a built-in function, or a mathematical expression
Where is the DEFAULT clause specified in a CREATE TABLE statement?
Within the declaration of the column, together with the data type and other column properties
What happens if you omit the DEFAULT keyword when creating a default definition in a CREATE TABLE statement?
The database engine assigns an implicit name for the default
What is the purpose of the CONSTRAINT option in a CREATE TABLE statement when creating a default definition?
To assign a name to the default constraint
Can a default value be specified for a column that has a PRIMARY KEY constraint?
Yes, and the default value is ignored if a value is specified during an INSERT operation
What happens when a default value is specified for a column and a value is also specified during an INSERT operation?
The specified value is used, and the default value is ignored
Can a default value be specified for a column that has a FOREIGN KEY constraint?
Yes, and the default value is ignored if a value is specified during an INSERT operation
What is the main benefit of using a default value for a column?
It simplifies data entry by providing a default value when no value is specified
What is the primary function of an index in a relational database?
To allow efficient access to data stored on a disk
What type of database object is derived from one or more base tables?
View
What is the purpose of the FOREIGN KEY constraint in the works_on1 table?
To create a relationship between the employee and project tables
What is the result of deleting a parent table row that has a related row in the works_on1 table?
The related row in works_on1 is deleted
What is the purpose of a stored procedure in a relational database?
To execute a sequence of statements written in Transact-SQL
What is the result of updating a parent table row that has a related row in the works_on1 table?
The related row in works_on1 is updated
What are the two types of database objects?
Physical and Logical
What is the first database object that needs to be created?
Database
What type of databases can an authorized user create?
User databases
What is managed by the Database Engine?
Both system and user databases
What is an example of a logical object?
Table
What are the system databases generated during the installation of the database system?
tempdb, model, and msdb
What is the maximum size of a database name in SQL Server?
128 characters
What is the purpose of the PRIMARY option in the CREATE DATABASE statement?
To specify the first file that contains system tables and other important internal information
What is the original size of the projects_dat file in the example?
10MB
What is the method used to create a database in SQL Server Management Studio?
Using Object Explorer
What is the file name of the log file in the example?
projects.ldf
What is the file growth rate for the projects_dat file in the example?
5MB
Test your knowledge of creating database objects, including PRIMARY KEY and CHECK constraints in SQL. Learn how to specify constraints at the table and column levels.
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