![]() ![]() Note: As new datasets are registered, the Data Crawler validates the files, and extracts meta-data such as file size, number of events, etc. Other meta-data is user-defined and is arbitrarily extensible.ĭata can be browsed using virtual folders and by "groups", which contain a homogeneous list of datasets, and it can be searched using meta-data. ![]() Data can also have associated "meta-data", some of which is required and verified by the catalog software (e.g., size, location, run range, and creation date). Data can be organized into a tree of "virtual" folders, which do not have to correspond with the physical location of data. The catalog simplifies access to data by providing a uniform view of files, regardless of their physical location. Data created/stored at SLAC, or elsewhere.Data created inside or outside of the processing pipeline.Disk files in AFS, NFS, or XROOTD servers, or tape archives.The Data Catalog is a database designed for tracking LAT datasets, and can be used with: If a newer version exists it will replace the existing version (and the existing version will be renamed *-old-n). Note: The download manager checks if the files to be downloaded already exist. Line Mode Version ( Tip: You can use this line mode tool to download files to remote sites using a cron job.).Data Catalog's Key Locations, and from the.GUI based version – Invoked directly from:.The Download Manager allows files to be securely downloaded from the data catalog.
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