MySQL Lookup Table + Multiple Constraints in one Lookup Table -

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i have table called users has around 50 columns , need add constraints around 30 of 50 columns. typically in past create 30 constraint tables , apply each users table foreign key constraint.

i wanted see if use 1 table 30 constraints?

this 1 table incrementing primary key , 30 columns - 1 each constraint. constraints around 5 entries , around 100 entries there null data in of constraint lists.

is realistic way multiple constraints or need use 1 table per constraint?

thanks

if constraint mean lookup tables, no, not combine them single table. if 1 of fields has 2 possible values , 1 has 3, first 1 still have 3 choices available in lookup table, if 3rd choice linked null.

if worried number of lookup tables, consider using mysql's enum data type instead.


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