relation
SQLAlchemy - difference between mapped orm.relation with backref or two orm.relation from both sides
In some project I implement user-requested mapping (at runtime) of two tables which are connected by a 1-to-n relation (one table has a ForeignKey field).[详细]
2023-02-06 04:38 分类:问答Zend_Db_Table "where" for relations?
Hello all Is Zend_Db_Table (Zend_Db_Table_*) supports where for related data that defined through $_referenceMap / $_dependentTable[详细]
2023-02-04 14:59 分类:问答Doctrine generate models - problem with relation type
I am trying generate doctrine models from yaml schema I have schema like that: Product: columns: id: type: integer(5)[详细]
2023-02-02 07:28 分类:问答Data alignment and zero-bits relation?
Reading through a paper for the ARM Cortex-M3 CPU I found this line confusing: The lowest 2 开发者_如何学JAVAbits of the stack[详细]
2023-01-30 13:34 分类:问答Pylons + SQLA: One to One Relationship
Newbie question. Pylons 1 + SQLA using declarative style. New to Python. I have a \"master\" class called Entity, which \"child\" classes must belong to for them to be valid. My link to the master cl[详细]
2023-01-25 00:21 分类:问答Writing a recurrence relation for a method
I have a bit of code and need to write a recurrence relation for it.The code simply calculates 2 raised to the nth power.[详细]
2023-01-17 06:02 分类:问答Recurrence Relation: Finding Big O
I am trying to find the big O bound for the following recurrence relation: T(n) = T(n-1) + n^c, where c >= 1 is a constant[详细]
2023-01-07 09:37 分类:问答What are the advantages of explicitly setting up relationships inside of a database
When your creating a database schema and come up with all the foreign keys. Wha开发者_如何学Got are the advantages of explicitly defining them as such in the database?[详细]
2023-01-06 14:23 分类:问答Facultative relation with Doctrine ORM
How should be implemented facultative one-to-one relation in Doctrine ORM and Symfony? Suppose there are some folders represented in database. Each folder can have a default icon or some custom icon r[详细]
2023-01-06 11:34 分类:问答Finding recurrence relations of an algorithm
I\'m reading my algorithms text book, and I\'m reading about recurrence relations and finding the algorithms big O complexity. I run across this line[详细]
2023-01-01 00:56 分类:问答