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2NF Normal Form : A relation schema process R is in 2NF if it is in 1NF and each non-prime attribute A in R is fully functionally related on primary key. Second normal form (2N
List any two disadvantages of a database system ? The disadvantages of database system are: • Database systems are difficult, complex, and time-consuming to design. • Substanti
Determine the Strong and Weak Entity Based on the method of foreign key, there might be arise a situation when we have to relate an entity having a primary key of its own and a
Consider the subsequent relations along with keys underlined Street (name, location, city) House (number, street_name) Lives (name, house_number) Define the above relations
What are the two types of serializability? The two types of serializability is a) Conflict serializability b) View serializability
Give some encryption techniques? A) DES B) AES C) Public key encryption
What is a SELECT operation? The select operation selects tuples that please a given predicate. We use the lowercase letter σ to denote selection.
Data slice explanation
Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4
What is an ERD?
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