This is ms create table script: It is a N:M relation between the SchoolclassCode and the Pupil table CREATE TABLE Schoolclasscode (
Can someone help me get the big p开发者_如何学Pythonicture when it comes to configuring SQLAlchemy models, so referential integrity is ensured at all levels?
Is there a Rails gem, plugin or other means to automatically add开发者_如何学运维 or remove ALL RI constraints from your DB and schema?Or ALL of them on a per table basis?Something like:
I\'m trying to see if开发者_运维技巧 there is a way to check the referential integrity of a single row after it has been inserted into an InnoDB table while foreign_key_checks is set to 0.
You cannot delete a row if any row is referencing the row to delete via a FK. Is it possible to know if any row is referencing the row to 开发者_如何学Pythondelete before executing a DELETE statement
I am facing a strange issue The Zend_DB_Adapter\'s beginTrasaction() and commit() methods don\'t seem to be working as expected. I have INSERT statements (in a FOR LOOP) enclosed in beginTrasaction()
I am building a database using SQL Server 2008 to store prices of securities that are traded on multiple markets.
We are planning on introducing simple Audit Trail in our database using triggers and separate history table for each table that requires auditing.
Can referential integrity constraints help in addressing data redundancy probl开发者_如何学运维ems?Referential integrity constraints are only a subset of \"database constraints in general\".
In Oracle 10g, is it possible to define referential integrity constraints for a Foreign Key to refer to Primary Key in multiple parent tables.
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