How Oracle Database uses internal locks to make statement level constraint validation robust at the transaction level

Lucas Jellema

Data Constraints are essential in protecting the integrity of the data in any relational database. The Oracle Database provides four types of declarative constraints that help implement various types of data rules. These are: Primary Key, Unique Key, Foreign Key and Check Constraint. Although these constraints can be configured to […]

Implementation of a moderately complex data constraint business rule using RuleGen 3.0

Lucas Jellema 4

In a previous article, I have introduced RuleGen 3.0 – a 2nd generation business rule implementation framework for the Oracle Database: RuleGen provides a solid, structured, scalable framework for database developers to implement data constraints in. This article demonstrates how a moderately complex rule is analyzed and designed and […]