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An entity is a fundamental thing of an organisation about which data may be maintained. It has its own identity which distinguish it from other entity.

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Q: What is a characteristic or property of an entity?
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What are the attributes of an Object?

In general, an attribute is a property or characteristic. Color, for example, is an attribute of your hair. In using or programming computers, an attribute is a changeable property or characteristic of some component of a program that can be set to different values.


Process is passive entity is it true?

No, Process is an active entity. Program, on the other hand, is a passive entity.


Can weak entity be converted into strong entity?

The primary key of a weak entity set is formed by taking the primary key of the strong entity set on which its existence depends (see Mapping Constraints) plus its discriminator. A strong entity set has a primary key. All tuples in the set are distinguishable by that key. A weak entity set has no primary key unless attributes of the strong entity set on which it depends are included. Tuples (a particular row) in a weak entity set are partitioned according to their relationship with tuples in a strong entity set. Tuples within each partition are distinguishable by a discriminator, which is a set of attributes.


What is the difference between the class and the entity?

A class is a type. An entity is a object created from this type. A class is like a definition and the entity behaves as per this definition.


Example of weak entity set?

an entity set may not have sufficient attribute 2 form a primary key is called weak entity set.ex entity set payment has 3 attribute pay-no,pay-date, pay-amount.pay-no is a sequential no generated 4 each loan.each payment entity is distinct,payments 4 different loans may share the same payment no.thus entity set doent have a primary key,so it is a weak entity set. Placid04 bakhra,muzaffarpur,bihar.