MID_2 - (C Conceptual(D External schemas(B 10 A logical...

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(C) Conceptual (D) External schemas (B) 10. A logical description of some portion of the database is a(n) ____ view. (A) internal (B) user (C) conceptual (D) implementation (D) 11. ____ schema at the internal level to describe physical storage structures and access paths. (A) implementation (B) external (C) conceptual (D) internal (D) 12. ____ among schema levels is needed to transform requests and data. (A) Query (B) Retrieval (C) Instances (D) Mapping (C) 13. ____ is used to specify database retrievals and updates? (A) SDL (B) DDL (C) DML (D) UML (C) 14. Languages, menus, and other facilities by which users interact with the database are collectively called a(n): (A) client. (B) icon. (C) user interface. (D) development environment. (D) 15. Which is not an approach of DBMS programming language interfaces? (A) Embedded (B) Procedure call (C) Database programming language (D) Dynamic linking (A) 16. Which is not a type of DBMS interfaces? (A) file (B) menu-based (C) Web browser (D) natural language (C) 17. Data ____ is used to store schema descriptions and other information. (A) constraint (B) operation (C) repository (D) query (C) 18. CASE is a class of tools that: (A) provides guidelines for the physical design of a database. (B) assists the database administrator in maintaining a database. (C) automates the design of databases and application programs. (D) provides management reporting tools. (B) 19. A workgroup database is stored on a central device called a(n): (A) client. (B) server. (C) network. (D) remote PC. (B) 20. Which stores the business logic part of the application? (A) client (B) application server (C) database server (D) interface (C) 21. The user interface is managed by the: (A) database tier. (B) client tier. (C) application tier. (D) lower tier. (B) 22. Which is not a type of data models? (A) network model (B) star model (C) hierarchical Model (D) relational model (B) 23. Which is an advantage of the hierarchical model? (A) Navigational and procedural nature of processing. (B) Simple to construct and operate. (C) Database is visualized as a linear arrangement of records. (D) There is little scope for "query optimization" (C) 24. Who created the relational mode? (A) Peter Chen (B) C. J. Date (C) E. F. Codd (D) None of the above
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Chapter 3: Data Modeling Using the Entity Relationship (B) 1. Which is the first step of Database System? (A) logic design (B) requirements collection and analysis (C) physical design (D) transaction implementation (D) 2. Which is in DBMS-independent design process? (A) application program (B) transaction implementation (C) physical (D) functional analysis (D) 3. Which is not a type of attributes? (A) Simple (B) Composite (C) Multi-valued (D) Parametic (A) 4. ____ are specific objects or things in the mini-world that are represented in the database. (A) Entities (B) Attributes (C) Relationships (D) Descriptions (C) 5. A property or characteristic of an entity type that is of interest to the organization is called a(n): (A) relationship. (B) coexisting entity. (C) attribute. (D) cross-function.
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  • Spring '14
  • SaraWalsh
  • Relational model, primary key

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