Aspire Faculty ID #14407 · Topic: COMPUTER SCIENCE INFORMATICS PRACTICES 2022 · Just now
COMPUTER SCIENCE INFORMATICS PRACTICES 2022

Match List I with List II
List I List II
A. Data redundancy I. Updating the structure of a data file requires modifying all application programs accessing the file
B. Data inconsistency II. Duplication of data at different places (files)
C. Data isolation III. Separation of resource or data modification made by different transactions
D. Data dependency IV. Mismatch of data maintained at different places

Solution

List I (Concept) Matched With (List II) Explanation
A. Data Redundancy II. Duplication of data at different places (files) Data redundancy occurs when the same data is stored in multiple files or locations, leading to unnecessary duplication and wasted storage space.
B. Data Inconsistency IV. Mismatch of data maintained at different places When data is redundant and one copy is updated but others are not, inconsistencies occur — resulting in mismatched or unreliable data.
C. Data Isolation III. Separation of resource or data modification made by different transactions In file systems, data is often scattered across different files, making it difficult to access or modify related information simultaneously. This problem is known as data isolation.
D. Data Dependency I. Updating the structure of a data file requires modification in all application programs accessing the file Data dependency means that the data structure and application programs are tightly coupled. Any change in file structure requires modification in all programs that use it.
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