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What is a primary key? Primary key is chosen by the database designer as the principal means of identifying an entity in the entity set.
.#question. Discuss the problem which may arise during concurrency control and recovery in distributed database which are not encountered in controlized database environment.
What are called index-sequential files? The files that are ordered sequentially with a primary index on the search key are known as index-sequential files
Suppose R is a relation with attributes A1, A2,..., An. As a function of n, tell how many superkeys R has, if: 1.1 The only key is A1. 1.2 The only key is A1 and A2. 1.3 The o
how to implement hyrise in C plus plus
What is the difference among a database schema and a database state? The collection of information stored in database at particular moment in time is known as database state a
Explain the concept of deadlock Yes. It can direct to deadlock. Suppose that a batch of frames arrived correctly and were accepted. Then receiver will advance its window. Now s
1. Explain different addressing modes of 8086 Explanation of all addressing modes 2. Write a sequence of instructions to exchange two register contents using stack
examples of fields in a database
State your technical objectives for mining the data. Data Understanding. Describe the data For each attribute, give its description and data type. For numeric attributes
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