Skip to main content

All Questions

Tagged with
Filter by
Sorted by
Tagged with
0 votes
0 answers
891 views

How to implement concrete table inheritance pattern in MySQL?

I want to know how to implement classes in MySQL that represent a subset of another class type, with the purpose of having subclasses inherit fields from the parent class. Described by Martin Fowler ...
ike5's user avatar
  • 109
0 votes
1 answer
4k views

How to list all the inherited tables from the parent table?

I have 3 tables (janitor, security & manager) which inherited from the user table. What is the query can be used to produce the following result(list all the name of the child tables)? Thank you....
TYL's user avatar
  • 3
5 votes
2 answers
14k views

Best practise for polymorphic associations in MySQL

I have a MySQL database with 3 tables holding the main classes of data: companies (company_id) persons (person_id, company_id) loans (loan_id, company_id) Both a 'loan' and a 'person' belong ...
ratherBeKiting's user avatar
2 votes
3 answers
593 views

Record inheritance in mySQL

I have been struggling with this for a little while. I want to have a set of calendar records. The top level will apply to a large group; the next level will apply to a sub-set and the final level ...
Richard's user avatar
  • 21
1 vote
1 answer
2k views

Inheritance discriminator column better int or varchar or enum?

What is the best practice for storing a discriminator column ? Does it make any difference ? Any pros/cons of using one over the other ? I am using MySql with Entity Framework but the question goes ...
Bart Calixto's user avatar