INTRODUCTION OF SQL
INTRODUCTION OF SQL SQL (Structured Query Language) is a programming language specifically designed for managing and manipulating relational databases. It allows users to store, manipulate, and retrieve data stored in a relational database management system (RDBMS). SQL is widely used in database management and is a standard language for relational …
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Codd’s 12 rules
Codd’s 12 rules · Mathematical theory of relational algebra and calculus. · This theory was proposed by Dr. E. F. Code in 1970. · Code publish their research paper with the title “ A relational model of data for large shared data banks” . · Mr Codd gives 12 rules. According to these rules, for a database to b…
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DBMS MCQ QUESTIONS MODEL PAPER –11
===================================================================== DBMS MCQ QUESTIONS MODEL PAPER –11 ====================================================================== 1. What is a schema in a DBMS? a. A specific record in a table b. A specific field in a record c. A blueprint or plan that describes the structure of the database …
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