Transcription of Database Concepts
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Database Concepts
IntroductIonAfter learning about importance of data in the previous chapter, we need to explore the methods to store and manage data electronically. Let us take an example of a school that maintains data about its students, along with their attendance record and guardian class teacher marks daily attendance of the students in the attendance register. The teacher records P for present or A for absent against each student s roll number on each working day. If class strength is 50 and total working days in Inconsistency of your Can damage your Remove the inconsistent And keep the original one !
» Introduction » File System » Database Management System » Relational Data Model » Keys in a Relational Database . Database Concepts. Chapter. 7 . Chap 7.indd 123 19-Jul-19 3:45:07 PM. 22122. 124. I. NFORMAT ICS. P. RACT CES – C. LASS. I. a month are 26, the teacher needs to record 50 × 26 ... commercial DBMS include MySQL, Oracle ...
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