Repository is used in information technology for central place in which an aggregation of data is kept and maintained in an organized way which is used in computer storage. Repository may be directly accessible to users and it can be a place which specific databases, files, or documents are obtained for further relocation or distribution in a network. Repository just the aggregation of data itself into some accessible place of storage and it may also imply some ability to selectively extract data form database with Related terms are data warehouse and data mining. Repository is also used in CASE development system including data elements, processes, inputs, outputs and interrelationships.