scroll area is used to maintain parent child relationship we insert grid in low level scroll

Example : assume we have 3 scroll levels in our page level1 level2 and level3 we insert grid in level 3

One of the differences between a grid and scroll is that a Grid can be inserted into a scroll but vice-versa is not possible. In fact a Grid is incapable of housing another grid.

From an end-user perspective a Grid provides visual access to many rows of data(from the record) at the same time whereas a scroll will display the details of one row of data.