A relation on sets S1, S2, ..., SN is any subset of S1 x S2 x ... x SN, where 'x' denotes the Cartesian product.
i have two tables: User and User_works (User HAS_MANY User_works). How can I add a condition to …
yii compare conditional-statements criteria relationI am studying for exams and am failing to find a solid criteria by which I can determine if the …
sql database-design relational relation relational-algebraI see the juxtaposition of these two errors and, given the dearth of Google search results, had to ask. What …
sql ruby-on-rails postgresql relationI know that extending objects is done via the _.extend(parent, child); method. I've seen different places in the web …
javascript underscore.js extend relationSay I have two relations that hold records in the same model, such as: @companies1 = Company.where(...) @companies2 = Company.where(...) …
ruby-on-rails ruby-on-rails-3 activerecord relationI hope you can help me with this problem because I really cannot see what is wrong here. I have 2 …
orm doctrine relationI'm not testing a Rails app. Just getting that out of the way. I'm testing a library that connects to …
ruby activerecord rspec mocking relationI have 2 simple tables. create table Owner ( Id int primary key, Name nvarchar(100), ); create table Status ( Id int primary key, …
foreign-keys dapper relation dapper-extensionsAssume I have following tables: table: followers_arrays id | array --------+--------- 1 | {3,4,5} table: small_profiles id | username | pic --------+----------+…
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