Abstract
During the construction and commissioning phases of the ATLAS detector, data related to the installation, placement, testing and performance of the equipment are stored in relational databases. Each group acquires and saves information in different servers, using diverse technologies, data modeling and terminologies. Installation and maintenance during the experiment construction and operation depends on the access to this information, as well as imply in its update. The development of retrieval and update systems for each data set requires too much effort and high maintenance cost. The Glance system retrieves and inserts/updates data independently of the modeling and technology used for the storage, recognizes the repositories internal structure and guides the user through the creation of search and insertion interfaces. Distinct and spread data sets can be transparently integrated in one interface. Data can be exported/imported to/from various formats. The system handles many independent interfaces, which can be accessed by users or other applications at any time. This paper describes the Glance conception, its development and features. The system usage is illustrated with examples. Current status and future work are also discussed.
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