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What was the method in which records are physically stored in a specified order according to a key field in each record ? A method in which records are physically stored within
Convert the following ER - diagram (Entity Relationship Diagram) into a relational database (the primary keys are underlined): 2160_Convert the following ER - diagram into a
Explain the uses of deadlock It will lead to deadlock since this is the only place where incoming acknowledgements are processed. Without this code, sender will keep timing ou
Whst is logical schema ? Logical schema is the entire database.
What is meant by functional dependencies? Consider a relation schema R and α C R and β C R. The functional dependency α ->β holds on relational schema R if in any legal relati
What is trigger? Triggers are statements that are executed automatically by the system as the side effect of a modification to the database.
Define the Two Phase Locking Protocol This is a protocol that is used to make sure serializability of transactions. This protocol needs that every transaction issue lock and u
The primary key is selected from the
The Transactions- A transaction is definite as the unit of work in a database system. Database systems that deal with a huge number of transactions are also termed as transaction p
What are the reasons for having variable length records? What are the various ways to store variable length records? Variable-length records arise in a database in various wa
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