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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
Explain P command in the respect of QBE? P: It is the command in which is used to print (logically display) the value of the attribute in whose cell it is writ
State The position of object at any moment is called state. An object can have many states depend upon time. After receiving some input instructions, the object can change its
Modular growth: In distributed environments, it is simple to expand. Latest sites can be added to the network without affecting the operations of other sites, as they are somewhat
what does glory be mean
Differance between internal and external schema? Internal and external schema: Internal Schema • Describes the physical storage structure • Uses a physical data model External
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
external and internal mapping with examples
Ask Write the SQL code that will create the table structure for a table named EMP _1. This table is a subset of the EMPLOYEE table. The basic EMP_1 table structure is summarized in
You must implement the entity relationship model provided in the model solution to Assignment 1. The model solution will be released on the course website approximately TWO (2) we
In case of entity integrity, the primary key may be declared? In a case of entity integrity primary key may be not Null.
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