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Data inconsistency exists when different and conflicting versions of the
same data appear in different places. Data inconsistency creates
unreliable information, because it will be difficult to determine which
version of the information is correct. (It's difficult to make correct - and
timely - decisions if those decisions are based on conflicting information.)
Data inconsistency is likely to occur when there is data redundancy. Data
redundancy occurs when the data file/database file contains redundant -
unnecessarily duplicated - data. That's why one major goal of good
database design is to eliminate data redundancy.
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What are the limitations of flat file databases?
• Data duplication• Data inconsistency or update/deletion/insertion anomalies• Data integrity errors (due to data inconsistency)• Inconsistent search results in multi-value fields
The problem of inconsistency in data is a direct result of?
Redundancy
What is redundancy and inconsistency in data base management system?
Redundancy - Repetative storage of data leading to possible multiple versions and/or ill utilisation of data storage capacity. Inconsistency - Failure to adhere to standardised storage of data; usage of varying formats, non-confirmation to standardised/defined methods to store similar/related data.
When data change in multiple list and all list are not updated then it called?
Data inconsistency
What are a couple of problems whit a traditional file environment?
Data redundancy Lack of data redundancy Data inconsistency Data security
What is data redundancy and problems associated with it?
Duplication of data is data redundancy. It leads to the problems like wastage of space and data inconsistency.
What is the definition of data inconsistency?
Data inconsistency is one of the problem that occurs in the database..Data inconsistency means various copies of the data no longer agree..(inconsistency- unchanging)example:-If a student want to make change in his records, the changes must be made in each and every pages that needs changes..ex:- if a student changes his address, the new address must be changed in all applications in the institution that require address. The changes doesn't occur automatically in all pages when it is made in one page.
What is Drawbacks of using file system to store data?
* Data redundancy and inconsistency. * Data isolation * Problem in atomicity of data * Difficulty to access data. * Security Problems
Advantage of an Oracle Database system?
Advantages provided by a database system are : a) Redundancy of data is reduced. b) Secured data. c) Controlled data inconsistency. d) Integrated data. e) Standardized data
What is data integration?
To integrate has two separate meanings. It might mean simply that different sets of data are put together. It can also refer to a mathematical process which is part of the calculus.
What is meant by data inconsistency in DBMS?
It Occures When The Same data Dosent Matches Each Other In Various Relations(Tables) take an exp of this,suppose a publisher request for change his address is stored in a book as well as , if address of publisher is not modified in any of two field than the same publisher will have diff. address into diff. field .This is known as data inconsistency
What is the plural form of inconsistency?
Inconsistencies is the plural of inconsistency
