DBMS Objective Questions | MCQ Quiz for Practice

61. The full form of DDL is

1. Dynamic Data Language
2. Detailed Data Language
3. Data Definition Language
4. Data Derivation Language

62. In E-R Diagram derived attribute are represented by

1. Ellipse
2. Dashed ellipse
3. Rectangle
4. Triangle

63. In E-R Diagram relationship type is represented by

1. Ellipse
2. Dashed ellipse
3. Rectangle
4. Diamond

64. In E-R diagram generalization is represented by

1. Ellipse
2. Dashed ellipse
3. Rectangle
4. Triangle

65. Which of the following is a comparison operator in SQL?

1. Equals To
2. LIKE
3. BETWEEN
4. All of the above

66. Which database level is closest to the users?

1. External
2. Internal
3. Physical
4. Conceptual

67. In a Hierarchical model records are organized as

1. Graph.
2. List.
3. Links.
4. Tree.

68. The method in which records are physically stored in a specified order according to a keyfield in each record is

1. hash.
2. direct.
3. sequential.
4. all of the above.

69. The database schema is written in

1. HLL
2. DML
3. DDL
4. DCL

70. Conceptual design

1. is a documentation technique.
2. needs data volume and processing frequencies to determine the size of the database.
3. involves modelling independent of the DBMS.
4. is designing the relational model.

71. The relational model feature is that there

1. is no need for primary key data.
2. is much more data independence than some other database models.
3. are explicit relationships among records.
4. are tables with many dimensions.

72. A logical schema

1. is the entire database
2. is a standard way of organizing information into a accessible part
3. describe how data is actually stored on disk
4. none of these

73. A logical schema

1. is the entire database.
2. is a standard way of organizing information into accessible parts.
3. describes how data is actually stored on disk.
4. both B and C

74. The property / properties of a database is / are :

1. It is an integrated collection of logically related records.
2. It consolidates separate files into a common pool of data records.
3. Data stored in a database is independent of the application programs using it.
4. All of the above.

75. A table joined with itself is called

1. Join
2. Self Join
3. Outer Join
4. Equi Join