(A) Relation
(B) Model
(C) Attribute
(D) Entity
Category: Database Mcqs
Database Mcqs for Screening tests, Interviews, Viva and Other competitive exams. Database Mcqs section will help users to prepare mcqs of Database for various exams. Aspirants of Lecturer Computer Science, SST Computer Science, Subject Specialist Computer Science, Data Entry operator, Computer Programmer, Computer Operator, System administrator, Database Administrator and all other Exams can prepare their Database portion from here.
Entity is a?
(A) Model in relation
(B) Thing in real world
(C) Present working model
(D) Object of relation
Which is a set of entities of the same type that share the same properties or attributes?
(A) Attribute set
(B) Relation set
(C) Entity set
(D) Entity model
Which among following gives logical structure of the database graphically?
(A) Database diagram
(B) Entity diagram
(C) Entity-relationship diagram
(D) Architectural representation
Which level of RAID refers to disk mirroring with blocks striping?
(A) RAID level 0
(B) RAID level 1
(C) RAID level 2
(D) RAID level 3
Which RAID level gives block level striping with double distributed parity?
(A) RAID 2
(B) RAID 5
(C) RAID 6
(D) RAID 10
Rad configuration of the disks are used to provide?
(A) High speed
(B) Fault tolerance
(C) High data density
(D) Both A & B
Given a block can hold either 3 records or 10 key pointers. A database contains n records, then how many blocks do we need to hold the data file in the dense index?
(A) n/3
(B) n/30
(C) n/10
(D) 13n/30