Anomalies are problems that arise in the data due to a flaw
in the database design. There are three types of anomalies….
*Insertion Anomalies:Insertion anomalies occur when we
try to insert data into a flawed table.
*Deletion Anomalies:- Deletion anomalies occur when we
delete data from a flawed schema.
*Update Anomalies:- Update anomalies occur when we
change data in a flawed schema.
Anomalies are problems which arises when changes are made to
There are three types of anomalies:
>INSERTIN-This problem occurs due to inability to represent
a certain information example;when information about new
cannot be inserted in a DB,
>DELETION-This occurs due to loss of useful information
Example;when we delete information in a DB we will loss
>UPDATE-This type occurs due to redundant information make
difficult to update
Update anomalies-data inconsistency that results from data redundancy and partial update.
Deletion anomalies-unintended loss of data due to the deletion of other data.
Insertion anomalies-the inability to add data to the database due to the absence of other data.