Consider a dataset with 6 month data as follows: // Month-01 = 1 // Month-02 = 5 // Month-03 = 3 // Month-04开发者_StackOverflow中文版 = 2
I want to know how to design invoice t开发者_运维问答able. An invoice include many orders from order table.
Alright, so I think I\'m pretty close to having what I need, but I\'m unsure about a couple of things:
All, I\'m a programmer by trade but for this particular project I\'m finidng myself being the DBA as well. Here is the scenario I\'m faced with:
I\'m making private messaging system using mysql. Created this tables: 1) users (id, name) 2) messages(id, text, created)
I am designing tables to store accounts of website users. There will be two types of accounts for the website, BuyerAccounts and SellerAccounts. My approach is to have a master Accounts table that wil
I am doing a system similar to a social network. The number max of users must be eventually50.000 or 70.000 at best.
I have a need to store data using the HSTORE type and index by key. CREATE INDEX ix_product_size ON product(((data->\'Size\')::INT))
There was a site which had a lot of database entity relation diagrams models, I helped a lot a开发者_如何学Cs a guide, because some of the implementations proposed where really good.
In our database model we have a Beneficiary entity. A beneficiary can be a physical person or a corporate beneficiary; a phisical beneficiary has a number of attributes such as name, surname, sex, etc
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