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What is normalization?
It is a method of analysing the given relation schemas based on their Functional Dependencies (FDs) and primary key to attain the properties
(1).Minimizing redundancy,
(2). Minimizing insertion, deletion and update anomalies.
Draw an ER diagram for company''s database schema
what is un ordered and ordered file managment?
Question: The following relational database schema corresponds to a part of a database used by the Registry Department of a university. DEPARTMENT (d#, d-name, head-of-dept)
Vertical Fragmentation- Vertical fragmentation groups together only those attributes in a relation that are used jointly by various important transactions. A vertical fragment is d
The Transactions- A transaction is definite as the unit of work in a database system. Database systems that deal with a huge number of transactions are also termed as transaction p
Advantages of Observation Methods: Bailey has pointed out four advantages of observation: 1. Superior in Data Collection on Non Verbal Behavior: When a person a opi
Discuss along with examples about several types of attributes present in the ER model? Types of Attributes are: • SIMPLE attributes are attributes which are drawn from the ato
What does Aggregation mean?
What is recovery management component? Ensuring durability is the responsibility of a software component of the base system known as the recovery management component.
Define the basic operations of the relational algebra? Ans: Basic operators of relational algebra are: 1. Union (∪) - Selects tuples which are in either P or Q or in bot
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