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What are the Issues when Selecting a Database
Issues when Selecting a Database
Explain what is Aggregation ? Aggregation: This is used whenever we intend to show a relationship between an entity and the relationship. There is no provision for this in th
Explain the concept of a data model ? Data Model - Model is an abstraction procedure which hides irrelevant details although highlighting details relevant to the application
explain in detail about crash recovery
Serialisable Schedules: If the processes of two transactions conflict with each other, how to verify that no concurrency related problems have happened? For this, serialisability t
What is meant by the degree of relationship set? The degree of relationship type is the number of participating entity types.
List the types of authorization. A) Read authorization B) Write authorization C) Update authorization D) Drop authorization
How is concurrency identified? Concurrency in objects can be identified by the way they alter their state. Current objects can change their state independently. Aggregation imp
Recovery Techniques: After Reading the types of failures and database errors, let us talk about how to recover from the failures. Recovery can be complete using/restoring the previ
Differance between procedural and non procedural DML? Procedural and non procedural DML Procedural DML exactly what data is require and how to obtain those data. Non procedural
What is deadlock? Neither of the transaction can ever proceed with its normal implementation. This situation is known as deadlock.
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