The main purpose of this paper is to present the Distributed Database approach and identify the Distributed Database problems. The reliability of a distributed database system is a program which runs on multiple processing elements and needs to communicate with other processing elements for a remote database will be executed successfully. The database is a collection of data describing the activities of one or more related organizations with a specific well-defined structure and purpose. A database is controlled by a Database Management System (DBMS) by maintaining and utilizing a large collection of data. A distributed database system is a kind of partnership among the individual local DBMSs at the individual local sites, this maintains the reliability and availability of the data. A distributed database is a collection of sites, connected together via some kind of communication network, in which each site is a full database system site in its own right. But the sites have agreed to work together so that any site can access data anywhere in the network exactly as of the data were all stored at the user’s own site. In the paper, I study the various reliability problems areas in a distributed database system such as update propagation, replication control, concurrency control etc. This paper also presents the advantages and disadvantages of the distributed database system. The main purpose objective of Distributed database stored the data where it is required.