Database SQL Quiz2
Database SQL Quiz
Test your knowledge of database principles and SQL with this engaging quiz designed for aspiring database administrators and IT professionals. Whether you are a student or a teacher, this quiz will help you gauge your understanding of important concepts related to relational databases.
Key features of the quiz:
- Topics include data integrity, relationships, and keys.
- Assess your understanding of business rules and constraints.
- Ideal for learning and preparing for certification.
A(n) ____ is a restriction placed on the data.
Attribute
Entity
Relationship
Constraint
A(n) ____'s main fun
Constraint
Entity
Model
Database
Which of the following is true of business rules?
They allow the designer to set company policies with regard to data.
They allow the designer to develop business processes.
They can serve as a communication tool between the users and designers.
They provide a framework for the company's self actualization.
____ are normally expressed in the form of rules.
Attributes
Entities
Relationships
Constraints
A(n) ____ is bidirectional.
Attribute
Entity
Relationship
Constraint
A(n) ____ is anything about which data are to be collected and stored.
Attribute
Entity
Relationship
Constraint
The relational data model was developed in the ____.
1960s
1970s
1980s
1990s
A _____ is any key that uniquely identifies each row.
Superkey
Special key
Foreign key
Candidate key
A _____ key is defined as a key that is used stictly for data retrieval purposes.
Lookup
Foreign
Candidate
Secondary
He CUSTOMER table's primary key is CUS_CODE. The CUSTOMER primary, key column has no null entries, and all entries axe unique. This is an example of _____ integrity.
Entity
Referential
Relational
Null
In the relational model, _____ are important because they are used to ensure that each row in a table is uniquely identifiable.
Relations
Keys
Indexes
Logical structures
The order of the rows and columns is important to the DBMS
True
False
A key can be described as a minimal superkey. A superkey without any unnecessary attributes
Secondary
Candidate
Primary
Foreign
The low, reangeof permissible values known as Its domain
True
False
A _____ is the primary key of one table that has been placed into another table to create a common attribute.
Superkey
Composite primary key
Candidate key
Foreign key
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