Q. In data abstraction which is lowest level of abstraction ?

View solution

Q. _______ of abstraction explains how data is actually stored and describes the Data Structure and Access methods used by database.

View solution

Q. "What data is stored ?" is described by __________ level of abstraction in DBMS.

View solution

Q. Part of entire database is shown by ________ level of abstraction.

View solution

Q. If user doesn't know anything about the complexity of database application then that user is called as _____________.

View solution

Q. Data Model is collection of conceptual tools for describing

View solution

Q. Data Models in DBMS are classified into ______ categories.

View solution

Q. Which of the following is example of Object based logical model ?

View solution

Q. Entity Relationship model consists of collection of basic objects called _________ and relationship among these objects.

View solution

Q. Object which is distinguishable from other objects by specific set of attributes is called as ___________.

View solution

Q. Association among several entities is called as _____________.

View solution

Q. ______________ express the number of entities to which another entity can be associated via a relationship set.

View solution

Q. In Object Oriented Model values are stored into __________ variables.

View solution

Q. Collection of tables to represent both data and relationship is described by _____________.

View solution

Q. Ability to modify schema of database in one level without affecting the schema definition in higher level is called as __________.

View solution

Q. There are _________ levels of data independence.

View solution

Q. Physical Data Independence is ability to modify _____________ without causing application program to rewrite.

View solution

Q. Logical Data independence is ability to modify ____________ without causing application program to rewrite.

View solution

Q. In enterprise data modeling, which is incorrect?

View solution

Q. Which is not a relevant feature of CASE tools?

View solution