Comparing basic strength of hydroxides of metal

Calcium Hydroxide (Ca(OH)2) or slaked lime is a base because in aqueous solution of slaked lime there are hydroxide ions available due to the dissociation of electrolyte (Ca(OH)2).

But while comparing the basic strength (Basicity) of metal hydroxide then it is against a reference.
Comparing in a group the basic strength of metal hydroxide always increases as the metallic character increases down the group. Thus the inoic character of hydroxide is higher so extent of dissociation is higher.

While moving in the period the basic strength of hydroxide decreases because the metallic character decreases as we move from left to right in the period

thus Slaked lime is a base but comparing it with Caustic potash it is a weaker base but comparing it with Be(OH)2 it would be a stronger base