EAV versus Row modeling

Following are main features/downsides EAV has over classic row modeling technique.

• A row-modeled table is homogeneous. It will always carry same type of data in contrast to EAV modeled table where this cannot be an issue.
• The data type of the value column/s in a row-modeled table is pre-determined by the nature of the facts it records. In contrast, in an EAV table, the conceptual data type of a value in a particular row depends on the attribute in that row.
• A Row modeling technique data increase only in one direction i.e. from Upside-down whereas in EAV data model data increase in both directions i.e. from upside down as well as from left-right.

Other Related Links:

EAV(Entity-Attribute Value) Model
EAV versus Row modeling
Downsides of EAV data model over class row model
Opting classic row modeling or EAV data modeling?