How to represent one special related record
I have two tables, project
and photo
. photo
has ID
,projectID
,path
: each project
has multiple photo
s.
How to represent one special related record
I have two tables, project
and photo
. photo
has ID
,projectID
,path
: each project
has multiple photo
s.
Normalization 3NF and BCNF
If I have the following relation R = (A, B, C, D)
Tags DB structure – tags table using one join and GROUP BY, or pivot (join) table using two joins?
I’m implementing tags into my question and answer application. Users will be limited to the tags available by the app, so they can’t choose their own. So maybe only 30-50 tags will be available. This could change in the future though but for now that’s the deal.
What happens to database design process when ORM tools are used?
I have learned about database design, including normalization during my undergraduate course. When we have to model a database for a system, we can start with an ER model and then convert it to the relational model and then we could normalize the design, to come up with the final schema of the database.
Database Normalization vs dependencies
I am developing 3-4 interdependent programs. Call them foo bar baz and auth. I want them to be independent of each other. Imagine if I were to license out each program to other companies. Some companies may want foo and bar, others may just want baz, etc. It also seems like good practice to keep auth independent as well.
Normalisation Vs Join , trade-off
In RDBMS, goals of Normalization:
Normalisation Vs Join , trade-off
In RDBMS, goals of Normalization:
Normalization_Schema Refinment
Consider a relation R (A, 8, C, D, E, F, G) with the following set of functional dependencies over
R:
F = {A->BC, B->D, C->EF, AC->G}