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Can a domain, assigned to a data element be changed?
Yes. We can do so by just overwriting the entry in the field domain.
What are the two types of serializability? The two types of serializability is a) Conflict serializability b) View serializability
What Is Recovery? During the life of a transaction, i.e., a after the start of a transaction but before the transaction commits, various changes may be made in a database state
in case of functional dependencies how we get the higher normal form.
The users who use easy-to-use menu are called ? The users who use easy to use menu are called as Naïve users.
MOSS VALE is a town with 15000 inhabitants. The fire department wishes to develop a system that automates the despatch of fire engines to attend fires. The ERD below describes the
Question : (a) Differentiate between database integrity and database security (b) Database security involves measures to avoid loss of privacy and loss of confidentiality. D
wh
Types of data independence Data independence can be classified into the following two types: Physical Data Independence: This means that for any change made in the physi
Multilevel Indexing Scheme Consider the indexing scheme where the address of the block is consider in the index for each record, for a little file, this index would be little a
how to prepare a data dictionary for online examination system for certified courses?
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