Example scenario. In a flight schedule system, there are a pilot table which refers to a plane_type table indicating the planes the pilot is able to fly (assuming that is a many-to-one relation).
I can\'t figure out what\'s happening here. I\'m building a wrapper for a Dictionary collection. The idea is that, when the size of the collection is small, it will use a normal in-memory Dictionary;
The below code works great for creatin开发者_运维问答g Unique Constraints : ALTER TABLE <tablename> ADD CONSTRAINT
Let\'s say I have following XML开发者_如何学C file: <authors> <author>a1</author>
I have a table that defines th开发者_StackOverflow中文版e rule between two variants: CREATE TABLE VARIANTCOMBINATIONRULE
Columns: id INT, provice_id INT, is_province BIT Foreign key: province_id references City (id) I\'d like to express the concept: when id == province_id then is_province == 1. How can i express this?
I am attempting to solve Sudoku as a constraint satisfaction problem for a homework assignment.I have already constructed constraints for all the elements in a particular row being distinct, as well a
I am trying to create a generic class whose implementation depends on the type being an Int32, Int64, double, float, or decimal.
I\'m using Oracle 10g Express and trying to delete records from tables with bi-directional 开发者_JAVA百科constraints. I\'m trying to un-thread hundreds of tables and dependencies generated via Hibern
While developing an Eclipse GEF application using an eclipselink implementation of JPA i have found an error that has been annoying me for a while:
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