INTRODUCTION TO RDBMS
Relational Model of Data for Large Shared Data Banks”, written in 1970. This paper included the following concepts that apply to database management systems for relational databases. The relation is the only data structure used in the relational data model to represent both entities and relationships between them.
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www.rjspm.comexpert opinion. A panel of experts is chosen to study a particular problem. Panel members do not meet as a group. They are asked to give an opinion about certain future events. After the first round of opinions has been collected, the co-coordinator summarizes the opinions and sends the information to panel members.
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