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What does conceptual design work? A conceptual design involves modelling independent of the DBMS.
What is key ? Key - A single attribute or a combination of two or more attributes of an entity set which is used to recognize one or more instances (rows) of the set (table) is
Explain retrieval in QBE? Retrieval in QBE : A "GUI" for expressing queries. Based on the Domain Relational Calculus (DRC) Actually invented before GUIs. Very co
Answer SQL Queries to extract data from data tables and questions on mapping conceptual data models into relational data model.
entity relationship diagram for online examination system
how to write tables and drow E-R diagrams for hosiptal management system and how to normalize and cardinalities?
Discuss The difference between drop table R and delete from R. DROP TABLE command deletes all the records with the table definition. This command will automatically committed
What is an ER diagram? Why is it used in Database management system (DBMS)?
explain five responsibilities of DBA?
Create role named role_table that allows a user to create tables. Using role_table allow users kripa and reena to create tables. CREATE ROLE role_table; GRANT CREATE ANY TABLE
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