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Data Redundancy-A lot of information is being repeated in the relation. For instance, the information that MCS-014 is named SSAD is repetitive, address of Rahul is "D- 27, Main road, Ranchi" is being repetitive in the first 3 records. Please search the other duplicate information. So we search that the course name, student name, address, instructor name and office number are being repeated often, thus, the table has Data Redundancy.
Please also note that each time we wish to insert a student record for a subject taken by him/her, say for instance, MCS-013, we have to insert the name of the course as well as the name and office number of its instructor. Also, every time we insert a new course we have to repeat the name and address of the student who has taken it. This replication of information results in troubles in addition to the wastage of space. Notice these problems in the STUDENT relation. What are these problems? Let us explain them.
What is Normalization? Database normalization is a data design and organization method applied to data structures based on rules that help building relational databases. In rel
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employee(empid,empname,dept,telno,mobno, add,sssno,tinno,WEdates,WEcomp,WEadd,WEpos,WEres) this is a employee record which is need to be normalize.the WE means work experience
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Explain the Relational Completeness Codd described the term relational completeness to consider to a language that is complete with respect to first-order predicate calculus ex
Instructions: Follow the instructions below for completing this project: 1. Creating the Database: · Use the physical table descriptions given below to define and create each t
Q. Define a weak entity set and its identifying relationship. List the necessary conditions for a meaningful identifying relationship set of a weak entity set. Entity is a t
Project Description: We have an encrypted HSQL Database which we want to change into csv format. HSQL DB . We have java application (jar file) which reads that database but n
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