MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -Entity type. A person, organization, object type, or concept about which information is stored. Describes the type of the information that is being mastered. An entity type typically corresponds to one or several related tables in database. Attribute.

Detailed explanation-2: -An entity in an entity set is represented by the sequence of attributes values which is simply a sequence of values hence, it is also called as a tuple. In the relational model, each entity sets are represented by a table. So, each row of a table in the database represents an entity.

Detailed explanation-3: -Tables are database objects that contain all the data in a database. In tables, data is logically organized in a row-and-column format similar to a spreadsheet. Each row represents a unique record, and each column represents a field in the record.

Detailed explanation-4: -An entity in DBMS is used to represent any real-world object, while an entity set in DBMS is a set or collection of entities of similar types. In relational models, i.e., the tabular representation to represent data, each row in a table is a separate entity while the whole table is an entity set.