sql - How do I create a bridge table? Do I create two primary keys and ...
Jan 4, 2021 · I have a table that I want to make which is a bridge table for teacher and class table. This is the ERD I initially thought I'm going to create this table by CREATE TABLE class_teacher ( teach...
sql - Joining multiple tables to a bridge table while keeping both ...
Jun 21, 2016 · Joining multiple tables to a bridge table while keeping both sides of data (Including NULLs) Asked 9 years, 5 months ago Modified 9 years, 5 months ago Viewed 3k times
sql - Single Bridge Table or is there a better way? - Stack Overflow
Aug 13, 2016 · with perhaps a "Type" table to help define/control the types of resources? If so, then you'd only need the one bridge table for each attribute table. Alternatively, perhaps a set of type …
Creating and Bridge tables in MySQL query - Stack Overflow
Mar 14, 2013 · 2 I am working with a basic table design for a MySQL database. This database project was given as an idea, mainly aimed for an educational purpose. There are a total of 11 tables which …
How to make SQL many-to-many same-type relationship table
Sep 4, 2013 · 23 I'm a newbie to SQL and I'm jumping in head first trying to learn as much as possible as I'm coding, which is difficult as I'm designing the database I'll have to live with for a while so I want …
Correct way to use INNER JOIN statement using a bridge table
Feb 14, 2014 · Table: Products Product_ID 4 Table: Sub_Categories Sub_Category_ID 5 Table: SubC_Prod_Bridge Product_ID Sub_Category_ID 4 5 I know this question is very basic. What I am …
sql server - How to solve this? Use a bridge table? - Stack Overflow
In another table there are three fields - Business Unit, Product Id and Customer Id.In this table one Product id refers to many Business Units and many Customer Ids. My question is do i need to place …
SQL query assistance with bridge table - Stack Overflow
Update records on this table from table_userpermissions - first record insert and set PermissionID1 & Rights1, Second record for a user update PermissionsID2 & Rights2, etc. Then you query this table …
Junction table vs linking table vs joining table vs bridging table
Aug 6, 2020 · Junction Table. From Wiki: An associative (or junction) table maps two or more tables together by referencing the primary keys of each data table. In effect, it contains a number of foreign …
sql - Bridge Table Primary Key or Composite/Compound Key - Stack …
Apr 10, 2013 · For a Bridge Table I have the PK from 2 other tables. What are the pros and cons of making a PK field for the bridge table or making a composite/compound between the two fields. I …