Page 69 - DLIS408_INFORMATION_TECHNOLOGY-APPLICATIONSL SCIENCES

Information Technology and Application

Notes Many bibliographic databases evolve into digital libraries, providing the full-text of the indexed
contents. Others converge with non-bibliographic scholarly databases to create more complete
disciplinary search engine systems, such as Chemical Abstracts or Entrez.

Self Assessment

State whether the following statements are true or false:
7. A bibliographic database is a database of bibliographic records, an organized digital col-
lection of references to published literature, including journal and newspaper articles,
conference proceedings etc.
8. A bibliographic database may be general in scope or cover a specific academic discipline.

5.4 Summary

An active database is a database that includes an event-driven architecture which can
respond to conditions both inside and outside the database.
Analysts may do their work directly against a data warehouse or create a separate analytic
database for Online Analytical Processing (OLAP).
Usually Distributed database refers to spatial distribution of a database and possibly the
DBMS over computers and sometimes over different sites.
These databases contain data collected for use across multiple organizations, either freely
or via subscription. The Internet Movie Database is one example.
A graph database is a kind of NoSQL database that uses graph structures with nodes, edges,
and properties to represent and store information.
Operational requirements are needed to be met by a database in order to effectively
support an application.
Database architecture may be viewed, to some extent, as an extension of Data modeling. It
is used to conveniently answer different end-user requirements from a same database.
Database access control deals with controlling who (a person or a certain computer pro-
gram) is allowed to access what information in the database.
Database storage is the container of the physical materialization of a database. It comprises
the Internal (physical) level in the Database architecture. It also contains all the informa-
tion needed (e.g., metadata, “data about the data”, and internal data structures) to recon-
struct the Conceptual level and External level from the Internal level when needed.
A bibliographic database may be general in scope or cover a specific academic discipline.
A significant number of bibliographic databases are still proprietary, available by licens-
ing agreement from vendors, or directly from the abstracting and indexing services that
create them.

5.5 Keywords

MMDB : Main memory database (MMDB) is a database that primarily resides in main memory.
OLAP : In computing, online analytical processing, (OLAP) is an approach to swiftly
answer multi-dimensional analytical (MDA) queries.
Data Architecture : Database architecture may be viewed, to some extent, as an extension of Data
modeling. It is used to conveniently answer different end-user requirements
from a same database.
Data Modeling : Data modeling in software engineering is the process of creating a data model
for an information system by applying formal data modeling techniques.

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