Types of changes in application or storage that require data mapping changes

Sample Solution

     

Data mapping changes are required when there are changes to the application or storage of data. This can include changes to the data schema, data types, data formats, or data locations.

Changes to the data schema

The data schema is the structure of the data. It defines the different types of data that are stored, as well as the relationships between them. Changes to the data schema can require data mapping changes if these changes affect the way that the data is stored or accessed.

Full Answer Section

      For example, if a new field is added to a database table, or if the data type of a field is changed, then the data mapping will need to be updated to reflect these changes. Changes to the data types The data type of a data field specifies the format of the data that can be stored in that field. Changes to the data types can require data mapping changes if the changes affect the way that the data is interpreted or used. For example, if a data field is changed from a string type to a numeric type, then the data mapping will need to be updated to reflect this change. This is because the data will now be interpreted and used as a number, rather than as a string of characters. Changes to the data formats The data format is the way that the data is physically stored. Changes to the data formats can require data mapping changes if the changes affect the way that the data is read or written. For example, if a database is migrated from one platform to another, then the data mapping will need to be updated to reflect the new data format. This is because the data will now be stored in a different way, and the application will need to be able to read and write the data in the new format. Changes to the data locations The data location is the physical location where the data is stored. Changes to the data locations can require data mapping changes if the changes affect the way that the data is accessed. For example, if a database is moved from one server to another, then the data mapping will need to be updated to reflect the new data location. This is because the application will now need to access the data from a different location. Examples of changes in application or storage that require data mapping changes Here are some specific examples of changes in application or storage that require data mapping changes:

• Adding a new field to a database table
• Changing the data type of a data field
• Migrating a database from one platform to another
• Moving a database from one server to another
• Changing the file format of a data file
• Merging two databases
• Splitting a database into two or more databases
• Changing the way that data is encrypted
• Changing the way that data is compressed

Conclusion Data mapping changes are required when there are changes to the application or storage of data. These changes can include changes to the data schema, data types, data formats, or data locations. It is important to update the data mapping to reflect any changes to the application or storage of data, in order to ensure that the data is accessed and used correctly.