EXERCISE_RELATIONALDATABASE
Quiz
•
Computers
•
University
•
Practice Problem
•
Medium
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Below are the type of key(s) available in RDBM EXCEPT
Superkey
Candidate key
Primary key
Composer key
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Below are the characteristics of a Relational Table EXCEPT
A table is perceived as a two-dimensional structure composed of rows and columns.
Each table row(tuple) represents a single entity occurrence within the entity set.
Each table column represents an attribute.
All values in a column may have different data format.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the table above, which one is Primary Key?
firstName
lastName
StudentID
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The order of rows and columns is important to the DBMS.
True
False
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the heart of the Relational Database Model?
A collection of rows
A collection of columns
A collection of attributes
A collection of tables
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
All Primary Key entries are unique, and no part of a primary key may be null
Entity Integrity
Referrential Integrity
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Complete the sentence below.
A _____ is a row in a database table. This is also known as a record.
Tuple
Degree
Relation
Domain
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