You are defining a database table. Which of the following best explains why you would assign a Social Security number field as a text field? a. The field will not be manipulated mathematically. b. This is the default type for most DBMS table...
Physical database design is the most detailed and technical level of the database design process. At this stage, designers make decisions about how the logical design will be implemented on a specific DBMS. Considerations include indexing, storage, performance optimization, and security measure...
. The highest level of abstraction describes only part of the entire database. Even though the logical level uses simpler structures, complexity remains because of the variety of information stored in a large database. Many users of the database system do not need all this information; instead,...
DBMS Components 1) Query Processor It is one of the functional components of DBMS. The database manager understands that the query processor translates statements into low-level instructions in a query language. It may also attempt to find an equivalent but more efficient form. ...
库---择Computer three level database knowledge test questions -multiple-choice questions Computer three leveldatabase knowledge test questions - multiple-choice questions Core tip: 1. DBS is acomputer system that uses database technology. DBS is a collection of database,computer hardware, software ...
database machines/ data warehousesthree-level architecturescheme integrationscheme abstraction/ C5220 Computer architecture C6160Z Other DBMSClassical architectures proposed so far for data warehouses show some drawbacks when adopted to work over large numbers of heterogeneous operational sources. In this ...
In this first generation, data quality was interpreted as the correctness of the data's ‘content’ and implemented as simple conformity checks in database management systems (DBMS) [11]. Organizations documented these checks in data models and realized them as integrity constraints (e.g., ...
Explain with examples what is meant by lossy decomposition and how this problem can be avoided in DBMS. How do algorithms work? What is interaction design? Explain the need for data structures when developing software. Briefly explain the pu...