Blog

A Data Model is Graphical.

Which of the following statements is true of information systems that support collaborative human activities?

A network database supports many-to-many relationships.

________ is a technology placed on tags that consist of small chips equipped with a microprocessor, a tiny antenna to receive and transmit data, and sometimes a battery that stores information on the tagged object’s history.

There is a polynomial time reduction from B to A.

Identify is this muscle. (muscle highlighted in green)

The need for efficiency has led database system developers to use complex data structures to represent data in the database.

Which of the following is a function of operations management?

A typical file-processing system is supported by a conventional operating system. The system stores permanent records in various files, and it needs different application programs to extract records from, and add records to, the appropriate files. Keeping organizational information in a file-processing system has a number of major disadvantages. Which one from the choices is not a disadvantage of a typical file-processing system?

Consider the Subgraph Isomorphism problem: Input: two undirected graphs G and H.Output: determine whether G is a subgraph of H (that is, whether by deleting certain vertices and edges of H we obtain a graph that is, up to renaming of vertices, identical to G). The Subgraph Isomorphism problem can be shown to be NP-hard because it is a generalization of