vsam 中文意思是什麼
vsam
解釋
商業數據仍然在大型主機上以非-
Vsam arranges records by an index key, relative record number, or relative byte addressing
Vsam通過一個索引鍵值,相關記錄號或者相關位元組地址來組織記錄。 -
In systems with vsam, a named structure consisting of a group of related components, forexample, a data component with its index component
在具有虛擬存儲訪問法( vsam )的系統中,由一組相關部件組成的一種命名結構,例如帶有其索引部件的數據部件。 -
In vsam, a collection of items used to sequence and locate one or more data records in a base cluster. each alternate index record contains an alternate key value and one or more pointers. when the alternate index supports a key sequenced data set, each data record ' s prime key value is the pointer. when the alternate index supports an entry sequenced data set, the data record ' s rba value is the pointer
在虛擬存儲存取方法( vsam )中,用於定序和定位基簇中的一個或多個數據記錄的項的匯集.每個備用索引記錄包含一個備用關鍵字的值和一個或多個指針.當該備用索引支持某個關鍵字順序數據集時,每個數據記錄的主關鍵字值就是這種指針.當該備用索引支持某個輸入順序數據集時,該數據記錄的rba (相對位元組地址)值就是這種指針 -
An index is a db2 object a separate vsam dataset that is comprised of an ordered set of keys extracted from one or more columns of the corresponding table
索引也是一種db2對象(一個單獨的vsam數據集) ,它由一組排好序的鍵組成,這些鍵是從相應表中的一個列或多個列抽取出來的。 -
Vsam is used for direct or sequential processing of fixed - length and variable - length records on dasd
Vsam用來對dasd上定長或變長的記錄進行直接或順序的處理。 -
Rational rapid developer also provides facilities to import definitions of legacy assets, such as ims or vsam database definitions
Rational rapid developer也提供了一系列的工具來插入遺留資產的定義,比如ims或者vsam數據庫定義。 -
Websphere information integrator can be used to extend the db2 sql api with transparent access to non - ibm relational databases such as oracle or sql server and materialize non - relational data sources like xml streams, message queues, vsam, ims, and so on as relational tables - thereby truly creating a corporate - wide common data model
之類的產品來擴展db2 sql api ,使其可以透明地訪問非ibm關系數據庫(例如oracle或sql server ) ,通過該產品還可以將非關系數據源(例如xml流、消息隊列、 vsam 、 ims等)物化為關系表從而真正創建一個公司級的公共數據模型。
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