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Explain the disadvantages of a file processing system?
Ans: Disadvantages of File Processing Systems include: 1) Data Redundancy 2) Data Inconsistency 3) Difficult to access data 4) Data isolation 5) Atomicity problem 6) Concurrent access anomalies 7) Security problem
What does Aggregation mean?
What is a Transaction? A transaction is an event which happens on the database. Generally a transaction reads a value from the database or writes a value to the database. If y
a project based on normalization with first, second and third normalization. There need to be a diagram also
Need 2 projects completed in 3NF format.
What do you mean through integrity constraints? Integrity Constraints -An integrity constraint is a condition specified on a database schema and restricts the data in which
What is Secondary Index While making the index, generally the index table is kept in the primary memory (RAM) and the main table, because of its size is keeps in the secondary
How to create a biological database based on viruses. How to decide which attribute should be there in the table and schema? How to identify the primary keys, foreign keys, domain,
What is the most significant feature that does not directly map into programming language structures? Why? Association, since there are complex types of association, like as qu
Question 1 Suppose the employee employee id, name, designation, salary, attendance and address of any employee has to be stored in a database. You can store these data in a sequen
What's the difference between a primary key and a unique key? Both primary key and unique key enforces uniqueness of the column on which they are explained. But by default prim
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