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Attributes attached to an entity can be of various types.
Simple
The attribute that cannot be further separated into smaller parts and shows the basic meaning is known as a simple attribute. For instance: The 'First name', 'Last name', age attributes of a person entity signifies a simple attribute.
Composite
Attributes that can be further separated into smaller units and every individual unit have a specific meaning.
For instance:-The NAME attribute of an employee entity can be sub-divided into
First name, Last name and Middle name.
What is a database graph? The partial ordering implies that the set D may now be viewed as a directed acyclic graph, known as a database graph.
What is the full form of ODBC ? ODBC stands for Open Database Connectivity.
Define entity integrity and referential integrity. How does SQL allow specification of these? Ans: Entity Integrity Rule- If the attribute A of relation R is a prime attribut
Normal 0 false false false EN-IN X-NONE X-NONE
Which is the properties of entities? Attributes is the properties of entities.
Illustrate the collaboration and relationship diagram A collaboration is the society of interfaces, classes and other elements which work together to provide some cooperative b
For Colorado customers calculate the number of single products ordered. If a product is purchased on multiple orders, it should be counted only single time. The result should conta
What are the situations while DBMS should not be used? DBMS should not be used in situations like: (i) No need of security. (ii) Not difficulty to access the data (iii) N
Implementation of association as an object Implement as a separate association object, independent of either class, as in Figure. An association object is a group of pairs
Explain Recursive relationship type? Recursive relationship type: A recursive relationship is one in that the similar entity participates more than once in the relationship
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