My Name is Muhammad Zulqarnain and
This is a NTS Test Preparation 2019.
Computer Science Test
Database development process involve mapping of conceptual data model into?
ANS: Implementation Model
An Entity related to itself in an ERD model refers to?
ANS: Recursive relationship
In ERD model, the relationship between two entities is represented by a?
ANS: Diamond symbol
In hybrid distribution which kind of fragments are stored at only one site?
ANS: Non-critical fragments
Customers, cars and parts are examples?
ANS: Entities
In an E-R diagram, a rectangle represents a?
ANS: Entity
A Person’s name, birthday and social security number are examples of?
ANS: Attributes
A technique for physically arranging the records of a file on secondary storage devices is called?
ANS: File Organization
A Factor to consider when choosing a file Organization is?
ANS: Fast data retrieval, Security, Efficient storage
A Primary key that consists of more than one attribute is called a?
ANS: Composite Key
An attribute in a relation of a database that serves as the primary key of another relation in the same database is called a?
ANS: Foreign Key
Which field listed below is the most appropriate primary key?
ANS: A person’s Social Security Number
An attribute (Or attributes) that uniquely identifies each row in a relation is called?
ANS: Primary key
Organizing the database in computer disk storage is done in?
ANS: Physical design
In 3NF which form of dependency is removed?
ANS: Transitive
https://www.blogger.com/blogger.g?blogID=6693768900759293311#allposts
If you want to ask any question, please ask in comments box.
#Thanks
