| 摘要 |
Apparatus for accessing a database having database records comprising data-compressed image data comprises a database server apparatus operable to respond to a database query by returning database records to the client process matching the criteria specified by the database query; and a client process for issuing database queries to the database server and for displaying information indicative of the database records returned by the database server apparatus; in which: the client process has a data decompressor for decompressing data-compressed images received from the database server and a data cache for storing decompressed image data representing those images; the client process is operable to retrieve, decompress, display and store in the data cache data-compressed a subset of the images relating to the database records returned by the database server; and the client process is then operable to retrieve, decompress and store in the data cache data-compressed images relating to the database records returned by the database server but not currently required for display.
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