- What are the disadvantages of database management system?
- What is the highest level of data abstraction?
- When would it make sense not to use a database system?
- What are the disadvantages of file system?
- What are the problems to store data with the traditional file system?
- What is data isolation in file system?
What are the disadvantages of database management system?
Disadvantages of Database Management System (DBMS):Increased costs.
one of the disadvantages of dbms is Database systems require sophisticated hardware and software and highly skilled personnel.
Frequent upgrade/replacement cycles..
What is the highest level of data abstraction?
View levelLogical level: This is the middle level of 3-level data abstraction architecture. It describes what data is stored in database. View level: Highest level of data abstraction. This level describes the user interaction with database system.
When would it make sense not to use a database system?
Answer. if not needed for the user as it can cast a huge amount and overheads of purchasing the database and maintaining it. then it make a sense not to use database system.
What are the disadvantages of file system?
Disadvantage of File-oriented system:Data Redundancy: It is possible that the same information may be duplicated in different files. … Data Inconsistency: … Difficulty in Accessing Data: … Limited Data Sharing: … Integrity Problems: … Atomicity Problems: … Concurrent Access Anomalies: … Security Problems:
What are the problems to store data with the traditional file system?
Problems resulting from the traditional file environment include:Data redundancy: duplicate data in multiple files, leading to data inconsistency, different values used for the same attribute.Program-data dependency: Changes in programs requiring changes to the data.Lack of flexibility.Poor security.More items…
What is data isolation in file system?
Data isolation is a property that determines when and how changes made by one operation become visible to other concurrent users and systems. This issue occurs in a concurrency situation. … It is difficult for new applications to retrieve the appropriate data, which might be stored in various files.