hierarchical database model معنى"hierarchical database model" أمثلة على نموذج قاعدة البيانات الهرمية "hierarchical" معنى "hierarchical database" معنى "database" معنى "database model" معنى "model" معنى "hierarchical network model" معنى "hierarchical clustering" معنى "hierarchical namespace" معنى "hierarchical organization" معنى "database" معنى "model" معنى "hierarchical administrative subdivision codes" معنى "hierarchical control system" معنى "four-tier programme hierarchical structure" معنى "accounts database" معنى "authentication database" معنى "beilstein database" معنى "biological database" معنى "column (database)" معنى "computer database" معنى "database administration" معنى "database administrator" معنى "database application" معنى "database connection" معنى "database design" معنى أمثلة While the hierarchical database model structures data as a tree of records, with each record having one parent record and many children, the network model allows each record to have multiple parent and child records, forming a generalized graph structure.
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