Object Oriented Database
Object Oriented Database Overview
Object Oriented Database Overview
The database management system which supports the modelling and creation of data as objects is known as an object-oriented database management system. The main feature of an ODBMS is that it makes database objects appear as programming language objects in one or more existing programming languages. Some of these object oriented database languages are Python, Java, C, Visual Basic, .NET, C++ and Smalltalk.
Components
There are three necessary components: object managers, object servers, and object stores. Applications interact with object managers, which work through object servers to gain access to object stores.
Key Features
An ODBMS must satisfy two criteria: it should be a DBMS, which translates into five features such as persistence, secondary storage management, concurrency, recovery and an ad hoc query facility. and it should be an object-oriented system which translates into eight features such as complex objects, object identity, encapsulation, types or classes, inheritance, overriding combined with late binding, extensibility and computational completeness.
Advantages
OODBs are designed for the purpose of storing and sharing objects. It has the capability to handle large number of different data types. It supports all the persistence necessary when working with object-oriented languages. Object oriented features improve productivity. It contains active object servers that support not only the distribution of data but also the distribution of work. OODBs are also used in applications handling BLOBs (binary large objects) such as images, sound, video, and uninformative text. OODBs support diverse data types rather than only the simple tables, columns and rows of relational databases.
Disadvantages
OODBs are not suited for all applications and are difficult to maintain. Lower efficiency when data is simple and relationships are simple. These are not responsive to changes and inadequate for concurrent problems.
 
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