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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.
3NF Normal Form A relation schema R is in 3NF if it is in 2NF and for each FD X A either of the following is true X is a Super-key of R. A is a prime attribute of R
exercise solution
What are the technique to define a schema completely ? A schema is completely define by DDL and DML query language.
1. Which model is used to store data in tree structures Ans: Hierarchical model is used to store data in tree structures
I need some help with my normalization database homework.
Update Anomaly : This anomaly is occurred due to data redundancy. Redundant information makes updates more complex since, for example, varying the name of the instructor of MCS-014
I need help in doing my dbms project
What are composite objects? Objects that have other objects are known as complex objects or composite objects.
usecase diagram,activity diagraM,SEQUENCE DIAGRAM
how design database from begining
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