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Advance DBMS MCQ Question with Answer

Advance DBMS MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

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Question No : 50
Symbol to represent weak entity set in ER Model

Dotted rectangle
Square
Doubly outlined rectangle
Diamond
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Question No : 51
The raw facts and figures are:

Data
Data field
DBMS
DBASE
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Question No : 52
Relational Algebra is

Data Definition Language.
Data Manipulation Language
Procedural query Language
None of the above
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Question No : 53
Which of the following Key is used to represent relationship between the tables?

Primary key
Secondary Key
Foreign Key
None of these
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Question No : 54
Which of the following produces the relation that has attributes of R1 and R2

Cartesian product
Difference
Intersection
Product
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Question No : 55
Which of the following file organization provides very fast access to any arbitrary record of a file?

Ordered file
Unordered file
Hashed file
B-tree
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Question No : 56
DBMS helps achieve

Data independence
Centralized control of data
Neither A) nor B)
both A) and B)
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