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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.
Why older data models are being replaced by new data modelling 100 words accepted#
A field-groups statement or an insert statement reverses storage space and transfers values. False.
Attributes and its types explain?
Draw an entity relationship diagram (ERD) for the following situation: A company has a number of employees. Each employee is identified by an Employee_Id. The company wants to st
For the question given below, you are required to submit design and implementation documentation as described over the page. Design, implement (in Java), test and document a set of
Describes the several relationship constraints through giving suitable example? Constraints on relationships: There are two kinds of constraints on relationships. 1) Mapping
Lock Based Protocol A lock is nothing but a mechanism that tells the DBMS whether a particular data item is being used by any transaction for read/write purpose. As there are t
In which format database schema is written ? Data base schema is written in the DDL format.
(a) Why did SAP introduce the extended star schema?
WHY SHOULD NULL IN A RELATION BE AVOID AS possible?
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