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Object vs Collection In TDL

 Object: An object is the definition which consists of a data and the associated / related functions,
commonly called as methods that manipulate the data. TDL is made up of User interface and Info
Objects. Info Objects can be External (user defined) or Internal (platform defined). External or
user defined objects are not persistent in the Tally database. It is not possible to create an Internal
Object Definition in TDL i.e. they are predefined by the platform . It is possible to perform modifications
on it. An object can also further contain an object/objects. A Ledger/Group is an example
of an internal object.

Collection: A Collection is a group of objects. Collections can be made up of internal or external
objects. These can be based on multiple collections also. We can create a collection by aggregating
the collections at a lower level in the hierarchy of objects.

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