Hello and welcome to exampundit. Here is a set of IBPS Specialist Officer IT Officer Professional Knowledge Test on Database Management System(DBMS).
Q.1 The full form of DDL is
(A Dynamic Data Language
(B) Detailed Data Language
(C) Data Definition Language
(D) Data Derivation Language
Q.2 Which of the following is an advantage of view?
(A) Data security
(B) Derived columns
(C) Hiding of complex queries
(D) All of the above
Q.3 Which of the following is a legal expression in SQL?
(A) SELECT NULL FROM EMPLOYEE;
(B) SELECT NAME FROM EMPLOYEE;
(C) SELECT NAME FROM EMPLOYEE WHERE SALARY = NULL;
(D) None of the above
Q.4 A set of possible data values is called
(A) attribute.
(B) degree.
(C) tuple.
(D) domain.
Q.5 Which of the operations constitute a basic set of operations for manipulating relational data?
(A) Predicate calculus
(B) Relational calculus
(C) Relational algebra
(D) None of the above
Q.6 Which of the following is another name for weak entity?
(A) Child
(B) Owner
(C) Dominant
(D) All of the above
Q.7 Which of the following database object does not physically exist?
(A) base table
(B) index
(C) view
(D) none of the above
Q.8 Which of the following is record based logical model?
(A) Network Model
(B) Object oriented model
(C) E-R Model
(D) None of these
Q.9 The natural join is equal to :
(A) Cartesian Product
(B) Combination of Union and Cartesian product
(C) Combination of selection and Cartesian product
(D) Combination of projection and Cartesian product
Q.10 Which one of the following is not true for a view:
(A) View is derived from other tables.
(B) View is a virtual table.
(C) A view definition is permanently stored as part of the database.
(D) View never contains derived columns.
Q.11 A primary key if combined with a foreign key creates
(A) Parent-Child relationship between the tables that connect them.
(B) Many to many relationship between the tables that connect them.
(C) Network model between the tables that connect them.
(D) None of the above.
Q.12 In E-R Diagram relationship type is represented by
(A) Ellipse
(B) Dashed ellipse
(C) Rectangle
(D) Diamond
Q.13 Hierarchical model is also called
(A) Tree structure
(B) Plex Structure
(C) Normalize Structure
(D) Table Structure
Q.14 In E-R diagram generalization is represented by
(A) Ellipse
(B) Dashed ellipse
(C) Rectangle
(D) Triangle
Q.15 _________ is a virtual table that draws its data from the result of an SQL SELECT statement.
(A) View
(B) Synonym
(C) Sequence
(D) TrAnsaction
Q.16 Relational Algebra is
(A) Data Definition Language .
(B) Meta Language
(C) Procedural query Language
(D) None of the above
Q.17 The conceptual model is
(A) dependent on hardware.
(B) dependent on software.
(C) dependent on both hardware and software .
(D) independent of both hardware and software.
Q.18 What is a relationship called when it is maintained between two entities?
(A) Unary
(B) Binary
(C) Ternary
(D) Quaternary
Q.19 Which of the following operation is used if we are interested in only certain columns of a table?
(A) PROJECTION
(B) SELECTION
(C) UNION
(D) JOIN
Q.20 Which of the following operations need the participating relations to be union compatible?
(A) UNION
(B) INTERSECTION
(C) DIFFERENCE
(D) All of the above
