Advanced data models containing declarative and programmatic constraints

A non-transitory computer readable storage medium storing one or more programs, the one or more programs comprising instructions for:

• defining a constraint on an object of a data model specified in a domain specific language, the data model being configured to define the object as a logical grouping of elements from an underlying database and the constraint being configured to execute a routine to validate an element of the object without changing the persistency of the underlying database when a triggering event associated with the object is detected, the routine being expressed using expressions from the domain specific language;
• compiling the constraint into a runtime artifact associated with the object;
• querying the underlying database to form a projection of the object that includes a subset of the logical grouping of elements;
• and
• executing the runtime artifact when the triggering event is detected on the projection.

A computer system comprising:

• a processor;
• and
• a non-transitory computer readable medium having stored thereon one or more programs, which when executed by the processor, causes the processor to:
• define, by a computer, a constraint on an object of a data model, the data model being configured to define the object as a logical grouping of elements from an underlying database and the constraint being configured to execute a routine to validate an element of the object when a triggering event associated with the object is detected;
• compile, by the computer, the constraint into a runtime artifact associated with the object;
• query, by the computer, the underlying database to form a projection of the object that includes a subset of the logical grouping of elements;
• and
• execute, by the computer, the runtime artifact when the triggering event is detected on the projection.