What is the Entity-Iatribute-Value model?

an entity-attribute-value model is and method of representing and Collection of Data Within and Computer. The Model is Designed to Allow An Entity to Be Described by and Narrow Set of Attributes that Are Selected From and Larger List of Possible Attributes. Possible to Attach only relevant Information to the entity’s data structure. This approach allows and or database to keep and Dynamic list of all possible Attributes that can grow as Needed while maintaining the integrity of data that has already been recorded. In this example, the names of people in the phone book are attributes and their phone numbers are the values ​​of these attributes.

6 Attributes can be easily added without the need for a complete database conversion or even any modification of existing records.

Another advantage of using entity-Attribute-vmodel Alue is that attributes in the list may not be all the same data type. Each attribute can not only be a different type of data, but in object -oriented programming can be completely different classes of the program.

Entity-patributa-value model is not an exclusive data model. In most databases, traditional relational structures can also be used to represent data where it is more practical. The surrounding data record can be solved relatively, while the interior fields are with the model entity-Attribute value.

database or program that uses the Entity-Iatribute data modeling model, it will probably be necessary to use metadata. Metadata is a collection of rules and instructions that span the distribution between the user and the data. It can define what values ​​are valid for a certain ATT att.Ribut, as the value should be displayed and possibly how the attributes could be arranged when generating messages.