1 / 18

OODBMS, MDDBMS

Outline. Issues with RDBMSOODBMSBenefits, drawbacksMDDBMSBenefits, drawbacksOLAP, MOLAPSummaryQuestions. Relational Databases. Have problems with redundancyCould normalize the data to create a star schema, but this breaks the

mikaia
Download Presentation

OODBMS, MDDBMS

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

    1. OODBMS, MDDBMS Two emerging (emerged?) database technologies, and how they relate to Knowledge Management Sean Sullivan 100046263

    2. Outline Issues with RDBMS OODBMS Benefits, drawbacks MDDBMS Benefits, drawbacks OLAP, MOLAP Summary Questions

    3. Relational Databases Have problems with redundancy Could normalize the data to create a star schema, but this breaks the “object” across multiple tables, and can introduce artificial keys Complex queries are difficult or sometimes impossible to write because SQL breaks the relational model Traditionally, could not represent files such as pictures, audio and video natively (only BLOB)

    4. OODBMS: A Solution? Started in the 1980s Integrates database capabilities with OO programming language capabilities Makes database objects appear as programming language objects in an existing language (such as JAVA, C++ or Smalltalk) Relational Model is no longer valid: objects are related through inheritance and polymorphism More of a persistent programming language than a DBMS

    5. Why Object Oriented?

More Related