Chapter 4 Key Terms

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Chap 4 Vocab-Relational Databases and Enterprise Systems
JACKSON BOEVE
Flashcards by JACKSON BOEVE, updated more than 1 year ago
JACKSON BOEVE
Created by JACKSON BOEVE over 1 year ago
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Attributes Data elements that describe class instances, like fields in a database table, characteristics, properties, or adjectives, define each class.
Cloud Computing Using redundant servers in multiple locations to host virtual machines.
Data Dictionary Describes the data fields in each database record, such as field description, field length, field type (e.g., alphanumeric, numeric), etc.
Database A shared collection of logically related data for various uses.
Database Administrator The person responsible for designing, implementing, repairing, and securing a firm's database.
Database Management System (DBMS) A computer program that creates, modifies, and queries the database. Specifically, the DBMS is designed to manage a database's storage and retrieval of information.
Enterprise System (ES) A centralized database that collects data from throughout the firm. A commercialized information system that integrates and automates business processes across a firm's value chain within and across organizations.
Entity Integrity Rule The primary key of a table must have data values (cannot be null).
Foreign Key (FK) Attribute that allows database tables to be inked together; foreign keys are the primary keys of other tables placed in the current table to support the link between the two tables.
Form Users utilize forms to enter data into tables and view existing records.
Hierarchical Data Model Organizes data into a tree-like structure that allows repeating information using defined parent/child relationships.
Macro Access users define macros to automate processes such as opening a specific form.
Module Some Microsoft applications come with built-in modules that will be automatically added to Access.
Network Data Model A flexible model representing objects and their relationships; allows each record to have multiple parent and child records or M: N mapping, also known as many-to-many relationships.
Pages Access pages allow data to be entered into the database from outside the system in real-time.
Primary Key (PK) An attribute or a combination of features uniquely identifies an instance of a class in a data model or a specific row in a table.
Query Query in Access is a tool to retrieve and display data from records stored within the database.
Referential Integrity Rule The data value for a foreign key must either be null or match one of the data values already in the corresponding table.
Relational Data Model Stores information in the form of related two-dimensional tables.
Report Report in Access integrates data from one or more queries and tables to provide helpful information to decision-makers.
Structured Query Language (SQL) A computer language designed to retrieve data from a relational database.
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