Is prefixing each field name in a table with abbreviated table name a good practice?

Question

Do you prefix each field in a table with abbreviated table name?

Example:

Table: User

Fields:
user_id
user_name
user_password

Or d

Answer 1

We also don't use abbreviated table prefixes normally and I wouldn't advice it either.

There's however one situation where we do: reserve fields.

 e.g. OH_Reserve_Field_Alpha3 in table ORDER_HEADER

Short background: Our database has 250+ tables and we put in most of them reserve columns to use them for future feature implementations. As you can imagine, without prefixing you would end up having 50 Reserve_Field_Alpha3's with totally different meaning but same name throughout your code. It's already hard as it's now, but without prefixes it would be worse.