Foreign keys are a data integrity feature of relational (and SQL) databases.
I have these tables: event (evt_id, evt_code, reg_id) magnitude (mag_id, evt_id, value) trace (trace_id, …
sql postgresql foreign-keys sql-deleteSo I have two simple beans -- FatKid and Hamburgers. Now, for reasons unbeknownst to me I need to be …
hibernate foreign-keys one-to-many h2 bidirectionalI have a strange problem with mysql. I am trying to alter a table's column which is a primary key …
mysql database foreign-keys auto-incrementI have a question of interest: I have 2 tables in mysql with InnoDb. table tbl_a has a primary key, …
mysql foreign-keys innodb myisamI'm having difficulty representing this query (which works on the database directly) as a criteria query in Hibernate (version 3.2.5): SELECT …
hibernate group-by projection foreign-keys many-to-oneWhat's the difference in a MySQL FK between RESTRICT and NO ACTION? From the doc they seem exactly the same. …
mysql foreign-keys cascadeBefore I dive really deep into MongoDB for days, I thought I'd ask a pretty basic question as to whether …
mongodb foreign-keys normalization database nosqlI'm getting this error in MySQL create. I'm doing: CREATE TABLE `blogReply` ( `Id` INT(24) NOT NULL AUTO_INCREMENT COMMENT 'Primary …
mysql foreign-keys mysql-error-1005This should be a fairly straightforward question, but I'm unable to find an easy answer. How do you create a …
mysql inheritance foreign-keys primary-keyGoal : I want to have importJobId in ImportJob as foreign key for id of allocation table, such that when we …
java sql hibernate foreign-keys composite-key