Chapter 05 Show
E-commerce presents a major opportunity for the effective use of data mining.���� TRUE Data marts are usually larger than data warehouses.������ FALSE One of the goals of a DBMS is to increase data redundancy thereby making it less vulnerable to hackers. FALSE A primary key is a field or set of fields that uniquely identifies a record.��� TRUE ER diagrams can serve as reference documents once a database is in use.���������� TRUE A database is a collection of integrated and related files.� TRUE The use of competitive intelligence is illegal and unethical.����������� FALSE The smallest piece of data used by computers is called a ____.
A collection of related data fields is called a ____.
A(n) ____ is a generalized class of people, places, or things for which data is collected, stored, and maintained.
In a relational database, the customer record contains information regarding the customer's last name. The last name is a(n) ____.
Which attribute would make the best primary key?
A more efficient and effective means of organizing data was developed with ____.
The database approach to data management requires ____.
Which of the following is NOT an advantage of the database approach to data management?
Roger Rotune created an ER diagram that encompassed the requirements of his organization. This is an example of ____.
A ____ is a diagram of entities and their relationships.
A data model that uses basic graphical symbols to show the relationships between data is a(n) ____.
The ____ data model follows a treelike structure.
The most popular database model currently in use is the ____.
As long as tables in a database ____, they can be linked to provide useful information.
The purpose of ____ is to develop data that is accurate and complete.
A ____ provides a detailed description of all data used in the database.
One of the first steps in installing and using a database involves ____.
A ____ allows the database's creator to describe the logical access paths and logical records in a database.
To speed up processing, Pill's Pottery Company sends a copy of important data to each of its five warehouses. At the end of the day, any changes are sent back to the main database. Pill's is using ____.
Cranberry Farms, Inc. in Wisconsin has data spread across several smaller databases that are connected via the Internet. They use a ____.
What is a collection of related data items each of which is called field or attributes?A collection of related data is called Database. A database is a data structure that stores organized information. Most databases contain multiple tables, which may each include several different fields.
Is a collection of fields that contain data about an entity?Record - a record represents a collection of attributes that describe a real-world entity. A record consists of fields, with each field describing an attribute of the entity.
Is a collection of information that is stored on a computer on a in a highly structured way?A database is an organized collection of structured information, or data, typically stored electronically in a computer system.
Is a field or set of fields in a record that identifies the record?A primary key consists of one or more fields that uniquely identify each record that you store in the table. Often, there is a unique identification number, such as an ID number, a serial number, or a code, that serves as a primary key.
|
Is a generalized class of people or objects for which data is collected stored and maintained?
zusammenhängende Posts
Urheberrechte © © 2024 defrojeostern Inc.
