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What is a primary index?
A primary index is an index whose search key also explains the sequential order of the file.
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 do you understand by ACID? - ACID (Atomicity Consistency Isolation Durability) is a quality sought after in a reliable database. Here's the relevance of each quality:
Define the terms 1) physical schema 2) logical schema. Physical schema: The physical schema explains the database design at the physical level, which is the lowest level of abs
An entity set that does not have sufficient attributes to form a primary key is called? An entity set that doesn't have sufficient attribute to form a primary key is known as w
why are older data models are being replaced by new data models
What are the three classes of SQL expression? SQL expression consists of three clauses: Select From Where
Explain the three data models namely relational, network and hierarchical and evaluate their relative advantages and disadvantages. Hierarchical Model: In hierarchical model, da
What is an Operand? The data on which the operation is to be performed is known as an Operand
Question: The following relational database schema corresponds to a part of a database used by the Registry Department of a university. DEPARTMENT (d#, d-name, head-of-dept)
What is meant by mean time to failure? The mean time to failure is the amount of time that the system could run continuously without failure.
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