Q.1 In the relational modes, cardinality is termed as:
(A) Number of tuples. (B) Number of attributes.
(C) Number of tables. (D) Number of constraints.
Ans: A
Q.2 Relational calculus is a
(A) Procedural language. (B) Non- Procedural language.
(C) Data definition language. (D) High level language.
Ans: B
Q.3 The view of total database content is
(A) Conceptual view. (B) Internal view.
(C) External view. (D) Physical View.
Ans: A
Q.4 Cartesian product in relational algebra is
(A) a Unary operator. (B) a Binary operator.
(C) a Ternary operator. (D) not defined.
Q.5 DML is provided for
(A) Description of logical structure of database.
(B) Addition of new structures in the database system.
(C) Manipulation & processing of database.
(D) Definition of physical structure of database system.
Q.6 | ‘AS’ clause is used in SQL for | |
(A) Selection operation. | (B) Rename operation. | |
(C) Join operation. | (D) Projection operation. |
Q.7 ODBC stands for
(A) Object Database Connectivity. (B) Oral Database Connectivity. (C) Oracle Database Connectivity. (D) Open Database Connectivity.
Ans: D
Q.8 Architecture of the database can be viewed as
(A) two levels. (C) three levels. | (B) (D) | four levels. one level. | ||
Ans: C | ||||
Q.9 In a relational model, relations are termed as | ||||
(A) Tuples. (C) Tables. | (B) (D) | Attributes Rows. | ||
Ans:D | ||||
Q.10 | The database schema is written in (A) HLL | (B) | DML | |
(C) DDL | (D) | DCL | ||
Ans: C | ||||
Q.11 In the architecture of a database system external level is the (A) physical level. (B) logical level. (C) conceptual level (D) view level.
Ans: D
Q.12 An entity set that does not have sufficient attributes to form a primary key is a
(A) strong entity set. (B) weak entity set.
(C) simple entity set. (D) primary entity set.
Ans: B
Q.14 In an E-R diagram attributes are represented by
(A) rectangle. (B) square.
(C) ellipse. (D) triangle.
Ans: C
Q.15 In case of entity integrity, the primary key may be
(A) not Null (B) Null
(C) both Null & not Null. (D) any value.
Ans: A
Q16 | A report generator is used to (A) update files. | (B) | print files on paper. |
(C) data entry. | (D) | delete files. | |
Ans: B |
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