Database Chapter 10

Aggregation
The process of transforming data from a detailed level to a summary level
Changed Data Capture (CDC)
Technique that indicates which data have changed since the last data integration activity
Data Federation
A technique for data integration that provides a virtual view of integrated data without actually creating one centralized database
Data Governance
High-level organizational groups and processes that oversee data stewardship across the organization. It usually guides data quality initiatives, data architecture, data integration and master data management, data warehousing and business intelligence, and other data-related matters
Data Scrubbing
A process of using pattern recognition and other artificial intelligence techniques to upgrade the quality of raw data before transforming and moving the data to the data warehouse. Also called data cleansing
Data Steward
A person assigned the responsibility of ensuring that organizational applications properly support the organization’s enterprise goals for data quality
Data Transformation
The component of data reconciliation that converts data from the format of the source operational systems to the format of the enterprise data warehouse
Incremental Extract
A method of capturing only the changes that have occurred in the source data since the last capture
Joining
The process of combining data from various sources into a single table or view
Master Data Management (MDM)
Disciplines, technologies, and methods used to ensure the currency, meaning, and quality of reference data within and across various subject areas
Refresh Mode
An approach to filling a data warehouse that involves bulk rewriting of the target data at periodic intervals
Selection
The process of partitioning data according to predefined criteria
Static Extract
A method of capturing a snapshot of the required source data at a point in time
Update Mode
An approach to filling a data warehouse in which only changes in the source data are written to the data warehouse