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Data-Management-Foundations

Practice WGU Data-Management-Foundations Exam Questions

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  Total 60 Questions
Question No 1

What is the role of the database administrator?

Choose the Choices:

The database administrator is a consumer of data in a database.

The database administrator is responsible for securing the database system against unauthorized users.

The database administrator determines the format of each data element and the overall database structure.

The database administrator develops computer programs that utilize a database.

B
Question No 2

What is the role of the transaction manager within the database system architecture?

Choose the Choices:

The transaction manager uses information from the catalog to perform query optimization.

The transaction manager is composed of a query processor, storage manager, transaction manager, log, and catalog.

The transaction manager logs insert, update, and delete queries, and the result is sent back to the application.

The transaction manager translates the query processor instructions into filesystem commands and uses an index to quickly locate the requested data.

C
Question No 3

Which product has an open - source license in addition to having a non - relational system?

Choose the Choices:

MongoDB

SQL Server

MySQL

Oracle Database

A
Question No 4

Which description defines a data type?

Choose the Choices:

It is a named set of values.

It is an unnamed tuple of values.

It has values corresponding to columns.

It has a name and a varying set of rows.

A
Question No 5

What does the aggregate function do?

Choose the Choices:

It computes values over a set of rows.

It selects rows that appear in one table but not another.

It eliminates one or more columns of a table.

It lists combinations of rows in two tables.

A
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