Part 1: Limits of Conventional RDBMs

Limit of Conventional databases

1. Good at large number of rows, but only with a few types (columns)

2. Hard to have design changes propagate throughout many object

3. Not good at version control of the database, and working with a large number of Devs

4. Not good at handling long transactions

Limit of Relational databases

1. Normalisation - leads to real world objects becoming abstracted, this leads to many joins during query processing

2. Passive data - behaviour of data that is not related to data

OODBs can solve this, they can store the structure of complex objects and their functionally is held

Part 2: Storing Objects (Object types)

Objects types have:

1. attributes

2. methods that define its behaviour

3. associations - links to other objects

Part 3: Problems with OODBMS

Strats for OODB development

Object Relational Database Management Systems

Classes and Object types - metadata

Attributes - data