Glossary - G to J
Data Migration Glossary This data migration glossary has been split into sections for faster loading. You can access the complete glossary by following the link, or use the search engine below to find specific terms. |
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Gap Analysis
- Gap analysis is the study of the differences between two different information systems or applications, often for the purpose of determining how to get from one state to a new state. A gap is sometimes spoken of as "the space between where we are and where we want to be." Gap analysis is undertaken as a means of bridging that space.
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Hub
- A data hub is a software application that received data from multiple sources and feeds it to a central database. On the way in the data is checked for quality and completeness. Problems can be trapped and fixed before the data enters the database. The concept of a hub As opposed to a data warehouse is that a hub continuously interacts with both up and downstream systems.
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Index
- AIn a Database indices are used to speed up data access. They are essentially a list of keys or keywords, which identify each unique record. Indices make it faster to find specific records and to sort records on the indexed field(s).
Integrity
- ARefers to the validity of data. Data integrity can be compromised in several ways, including human error when data is entered or errors that occur when data is transmitted from one computer to another.
ISAM - Indexed Sequential Access Method
- A method for managing how a computer accesses records and files stored on a hard disk. ISAM provides direct access to sequentially stored records through an index. This combination results in quick data access.
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Java
- Java is a programming language written by Sun Microsystems designed for use on the Internet. It was designed to have the "look and feel" of the C++ language, but to be simpler to use. It enforces an object-orientated programming model. Learn more about Java here.
JDBC - Java Database Connectivity
- An application program interface (API) specification for connecting programs written in Java to the data in popular databases. The API lets you submit statements in Structured Query Language (SQL) that are then passed to the program that manages the database. It returns the results through a similar interface. JDBC is very similar to the SQL Access Group's Open Database Connectivity (ODBC)
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