So I am a first time user here, and still relatively new to SQL.I am attempting to take 2 tables, and join them in a sense.
I\'m having some issues with double-posting on my site. I figure a simple开发者_JS百科 unique constraint across all the relevant fields will solve the issue on a database level, but then it just produ
I\'ve got an Invoice model, and I want to keep the total up to da开发者_如何转开发te. So I\'ve added a property like this
I\'m having a server client database design which I\'m unsure is Core Data suitable? I have a server database which will maintain the master copy of the data and their relationship.
I have an outings table, which basically holds some information about an \'outing\'. These outings then have crews, which have users (through crew_users)
I should know开发者_如何学Python this but I expect it to be a simple answer... This is my simple database so far for this question:
As it currently stands, this question is not a good fit for our Q&A 开发者_StackOverflow中文版format. We expect answers to be supported by facts, references,or expertise, but this question wil
I am trying to create a proper parent/child relationship within my data model. I have a typical one to many relationship between the parent and children.
Suppose I have the following tables in my database: Now all my queries depend on Company table. Is it a bad practice to give every other table a (redundant) relationships to the Company table to s
I have a structure of about 10 tables. This structure works great for data entry. However, I also need to preform complex and fast searches on that dataset. There are three approaches to this I can th
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