[单选题]The type of logical database model that treats data as if they were stored in two- dimensional tables is the: A.OODBMS. B.pre-digital DBMS. C.relational DBMS. D.hierarchical DBMS [答案]C[分数]2 [分类] 管理信息系统 [单选题]A characteristic or quality describing an entity is called a(n): A.field. B.tuple. C.key field. D.attribute. [答案]D [分数]2 [分类] 管理信息系统 [单选题]The most basic business database is comprised of: A.three tables: a table for customers, a table for suppliers and parts, and a table for sales. B.four tables: a table for customers, a table for suppliers, a table for parts, and a table for sales. C.four tables: a table for customers, a table for employees, a table for suppliers and parts, a table for sales. D.five tables: a table for customers, a table for employees, a table for suppliers, a table for parts, and a table for sales. [答案]D [分数]2 [分类] 管理信息系统 [单选题]In a table for customers, the information about a single customer would reside in a single: A.field.
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