数据库(DB)是长期储存在计算机内、有组织的、可共享的大量数据的集合,它具有统一的结构形式并存放于统一的存储介质内,是多种应用数据的集成,并可被各个应用程序所共享,所以数据库技术的根本目标是解决数据共享问题。 数据库管理系统(DBMS)是数据库的管理机构,负责数据库中的数据组织、数据操纵、数据维护、控制及保护...
scatter diagramaggregated data/ C6160Z Other DBMS C6120 File organisation C4250 Database theory C1160 Combinatorial mathematicsData warehouses are used to store large amounts of data which is oftenused for On-Line Analytical Processing (OLAP). Short response timesare essential for on-line decision...
providing a lock hierarchy which plural trylocks are distributed among nodes of a tree-based node structure having a plurality of leaf nodes, one or more internal nodes, and a root node; assigning said processors to said leaf nodes in a distributed and balanced manner in order to minimize mem...
the sense that a user has to learn the underlying model before composing events. A common issue of these solutions remains in the context storage, generally based on a decoupled DBMS, which impacts the simplicity of queries. The runtime additional cost of addressing the DBMS and couple its inf...
A method of constructing an aid to tuning of database statements comprises a data structure (stored in a memory on a computer system) which compactly represents that information which is needed about a database statement to determine the optimal series of operations (e.g., table data fetches)...