UGC NET CSE | December 2015 | Part 2 | Question: 18

Question

Which of the following provides the best description of an entity type?

• A. A specific concrete object with a defined set of processes (e.g. Jatin with diabetes)
• B. A value given to a particular attribute (e.g. height - 230 cm)
• C. A thing that we wish to collect data about zero or more, possibly real world examples of it may exist
• D. A template for a group of things with the same set of characteristics that may exist in the real world

Answer 1

It is D

It is collection of entity having common attribute. As in Student table each row is an entity and have common attributes.

So STUDENT is an entity type which contains entities having attributes id, name and Age.

Also each entity type in a database is described by a name and a list of attribute.So we may say a table is an entity type

Each template contains the following information:

• A unique name. (Required.)

• An entity key defined by one or more properties. (Required.)

• Data in the form of properties. (Optional.)

• Navigation properties that allow for navigation from one end of an association to the other end. (Optional)

This link is helpful

https://msdn.microsoft.com/en-us/library/ee382837(v=vs.110).aspx