Data Management Technologies

 

 

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An embedded system is a system that is ‘lodged solidly into’ a larger system and which performs some specific operation or class of operations integral to the larger system.

 

Embedded systems are used in many different kinds of applications today including automobile control and entertainment systems, aerospace, industrial automation, robotics, even some household appliances.

 

Embedded systems often have important real-time requirements (e.g., flight control systems) and utilize operating systems specifically designed to support real-time operations.

 

By contrast, an ‘enterprise DBMS’ is one that is designed to be used by many different software applications and, thus, necessarily runs independently of the applications that use them.

 

Embedded database tools, for example, can be used for email archive searches, for presentation of gaming statistics or other stored game data, and for industry-specific tools like tax-preparation software packages.

 

 

 

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Text Mining in Databases

 

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Text data mining involves combing through a text document or resource to get valuable structured information.

 

This requires sophisticated analytical tools that process text in order to glean specific keywords or key data points from what are considered relatively raw or unstructured formats.

 

In text data mining, engineered systems use things like taxonomies and lexical analysis to determine what parts of a text document are valuable as mined data.

 

Statistical models are commonly useful, and systems may also use heuristics, or algorithmic guesswork, to try to determine which parts of a text are important.

 

Other control systems include tagging and keyword analysis, where tools look for specific proper nouns or other tags and keywords to figure out what is being written about.

 

Data mining refers to the activity of going through big data sets to look for relevant or pertinent information.

 

It can be automated, or it can be largely labor-intensive, where individual workers send specific queries for information to an archive or database.

 

 

 

 

 

 

 

 

 

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Web Portals and Database Architecture

 

 

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A Web portal is a specially designed website that brings information from diverse sources, like emails, online forums and search engines, together in a uniform way.

 

A portal application is a Web-accessible, interactive tool on a secured website that delivers both related and unrelated applications, services and links.

 

Portal applications provide data in an easily understandable format, modify or manipulate the data, and communicate with companies or individuals about the data.

 

Web portals are also classified based on their types, such as market space portals, public web portals, enterprise web portals, knowledge portals, etc.

 

A great database design tool can be helpful; specifically one that can help set up visual database models, such as MySQL Workbench (for MySQL databases only) or DBDesigner4. Gliffy is also a great free online application for creating flowcharts and database models.

 

 

Almost all databases are relational databases. This means that the tables in the database are related to each other in some way.

 

 

 

 

 

 

 

 

 

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XML and Extensible Languages

 

 

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Extensible Markup Language (XML) is a simple, very flexible text format derived from SGML (ISO 8879).

 

Originally designed to meet the challenges of large-scale electronic publishing, XML is also playing an increasingly important role in the exchange of a wide variety of data on the Web and elsewhere.

 

XML is a format to represent data. It has originally be designed for this data to be essentially text documents or messages, but nothing prevents you from representing any data you wish, including programs.

 

Examples include typesetting instructions such as those found in troff, TeX and LaTeX, or structural markers such as XML tags. Markup instructs the software that displays the text to carry out appropriate actions, but is omitted from the version of the text that users see.

 

Some markup languages, such as the widely used HTML, have pre-defined presentation semantics—meaning that their specification prescribes how to present the structured data. Others, such as XML, do not have them and are general purpose.

 

HyperText Markup Language (HTML), one of the document formats of the World Wide Web, is an instance of Standard Generalized Markup Language or SGML, and follows many of the markup conventions used in the publishing industry in the communication of printed work between authors, editors, and printers.

 

 

 

 

 

 

 

 

 

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