A directory of Objective Type Questions covering all the Computer Science subjects. Here you can access and discuss Multiple choice questions and answers for various compitative exams and interviews.

221. Data elements are linked in form of inverted tree structure in the
a. Relational databases
b. Hierarchical databases
c. Structured databases
d. Object Oriented databases
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Answer: (b).Hierarchical databases

222. Network database structure is an extension of
a. Entity relationship databases
b. Relational databases
c. Network databases
d. Hierarchical databases
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Answer: (c).Network databases

223. Greater flexibility of data organization in databases is provided with
a. Relational databases
b. Network databases
c. Object Oriented databases
d. Entity relationship databases
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Answer: (a).Relational databases

224. A collection of objects whose behavior and states are defined in accordance to classes is said to be
a. Object relational databases
b. Object Oriented databases
c. Object entity databases
d. Object network databases
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Answer: (b).Object Oriented databases

225. In relational database structure, data elements are organized in form of
a. Entities
b. Records
c. Tuples
d. Tables
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Answer: (d).Tables

226. Structure of database is defined by means of
a. Data declaration language
b. Data modulation language
c. Data definition language
d. Data domain language
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Answer: (c).Data definition language

227. In hierarchical databases, relationship is of type
a. Successor/Predecessor relationship
b. Root/Leaf relationship
c. Stem/Leaf relationship
d. Parent/Child relationship
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Answer: (d).Parent/Child relationship