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Attributes having a one value for a particular entity.
For instance, Age is a single valued attribute of a student entity.
Attributes that have more than single values for a specific entity is known as a multivalued attribute. Different entities may have dissimilar number of values for these types of attributes. For multivalued attributes we can also states the minimum and maximum number of vales that can be attached. For instance, phone number for a person entity is a multivalued attribute.
It can be easily defined as: The database must not have any unmatched foreign key values. The term "unmatched foreign key value" means a foreign key value for which there doe
what would go in order patient#, patient name, patien address, surgeon#, surgeon name, surgery date, surgery type, drug admin
Aggregation Aggregation is stronger form of association. It represents the "has-a" or "part-of" relationship. An aggregation association depicts a complex object which is comp
Importance Of File Organisation In Database To execute a database efficiently, there are various design tradeoffs needed. One of the most vital ones is the file Organisation. F
Illustrate different types of Locks in SQL Server. There are three kinds of locks in SQL Server i.) Shared locks - These are used for operations which don't allow any update
Define Physical and Logical independence Ans: Physical data independence: The ability to modify physical level without causing application program to be rewritten. Logic
Replication : It is definite as a copy of a relation. Every replica is stored at a dissimilar site. The alternative to replication is to store only single copy of a relation which
Consider a typical sales invoice that would include the following information. Design a single table to hold all of the information required to store an invoice including this info
design a generalization specialization hierarchy for a motor vehicle sales company. the company sells motorcycles, passenger cars, vens and buses.
How many types of Views are there? There are Four types of views:- Database View Help View Projection View Maintenance View
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