D426 Practice Test with accurate detailed solutions

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D426 Practice Test with accurate detailed solutions

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D426 Practice Test with accurate detailed solutions

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D426 Practice Test with accurate detailed ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\||

solutions

UPDATE tablename ||//|\\||

*****

[WHERE conditionlist]; ||//|\\||

What command replaces the ***** in the above statement?
||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\||

a. SET columnname = expression
||//|\\|| ||//|\\|| ||//|\\|| ||//|\\||

b. columnname = expression
||//|\\|| ||//|\\|| ||//|\\||

c. expression = columnname
||//|\\|| ||//|\\|| ||//|\\||

d. LET columnname = expression - correct answer✔✔a. SET columnname = expression
||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\||

A record consists of a ____.
||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\||

a. character ||//|\\||

b. collection of related records
||//|\\|| ||//|\\|| ||//|\\|| ||//|\\||

c. set of one or more fields
||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\||

d. group of files - correct answer✔✔c. set of one or more fields
||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\||

A DBMS performs several important functions that guarantee the integrity and consistency
||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\||

of the data in the database. Which of the following is NOT one of those functions?
||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\||

a. Data integrity management
||//|\\|| ||//|\\|| ||//|\\||

b. Data storage management
||//|\\|| ||//|\\|| ||//|\\||

,c. Data reports
||//|\\|| ||//|\\||

d. Security management - correct answer✔✔c. data reports
||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\||

Which item is unstructured data. ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\||

a. A record representing one student
||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\||

b. A video
||//|\\|| ||//|\\||

c. A table that holds student data
||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\||

d. A relational database that hold course registration data. - correct answer✔✔b. a video
||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\||

Data is/are: ||//|\\||

a. information
||//|\\||

b. raw facts
||//|\\|| ||//|\\||

c. processed information
||//|\\|| ||//|\\||

d. a DBMS - correct answer✔✔b. raw facts
||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\||

A pet owner can have many pets; a specific pet is linked to one pet owner.
||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\||

Which kind of binary relationship is described in this example? ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\||

a. One-to-one
||//|\\||

b. One-to-many
||//|\\||

c. Many-to-many
||//|\\||

d. Associative - correct answer✔✔a. one-to-many
||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\||

, Database models were developed to ____. ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\||

a. model real-world events or conditions
||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\||

b. deposit data within a single file
||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\||

c. keep data within multiple data repositories
||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\||

d. allow DBMSs to maintain loose control over the database activities - correct
||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\||

answer✔✔a. model real-world events or conditions ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\||

What type of relationship is expressed with the phrase "A Painter paints one or more
||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\||

Paintings"?

a. 1:M
||//|\\||

b. 1:1
||//|\\||

c. M:1
||//|\\||

d. M:N - correct answer✔✔. 1:M or One-to-Many
||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\||

The entity integrity rule requires that ____.
||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\||

a. all primary key entries are unique
||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\||

b. a part of the key may be null
||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\||

c. foreign key values do not reference primary key values
||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\||

d. duplicate object values are allowed - correct answer✔✔a. all primary key entries are
||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\||

unique

What does the 'refer' in referential integrity mean
||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\||

a. The relationships between entities and attributes, also called referrals
||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\|| ||//|\\||

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Uploaded on: August 28, 2025
Number of pages: 21
Written in: 2025/2026
Type: Exam (elaborations)
Contains: Questions & answers

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