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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
how to write tables and drow E-R diagrams for hosiptal management system and how to normalize and cardinalities?
Deadlock Prevention One of the easiest approaches for avoiding a deadlock would be to obtain all the locks at the begin of the transaction. Though, this approach restricts conc
Describe Specialsation and generalization? Specialisation /generalization: This is a top down and bottom up approach to the design of database. It displays the IS_A relation
Write short note on Events Events consist of inputs, interrupts, decisions and actions performed by any external device or users. Every event always has a sender and receiver.
how many types of data model in DBMS? explain data abstraction with its different level
The need for three level architecture The aim of the three level architecture is to divide each user's view of the database from the way the database is physically shown.
What is object containment? References among objects can be used to model dissimilar real-world concepts.
Accessing information about permissions to all users- Object level permissions: With the use of data dictionary you can see the permissions to user. Let us get the table name fro
Haw does it work one database application
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