Saved Papers

Save papers so you can find them more easily!

Join Now

Get instant access to over 100,000 papers.

Join Now!

Database Concepts

Databases have been in use since the earliest days of electronic computing, but the vast majority of these were custom programs written to access custom databases. Unlike modern systems which can be applied to widely different databases and needs, these systems were tightly linked to the database in order to gain speed at the price of flexibility.

In 1960, Charles Bachman developed the first database management system (DBMS) which two key data models arose: the network model (developed by CODASYL) followed by the hierarchical model (as implemented in IMS). These were later usurped by the relational model, which was contemporary with the so-called flat model designed for very small tasks. Another contemporary of the relational model is the object-oriented database (OODB).

Flat model

The flat (or table) model consists of a single, two-dimensional array of data elements, where all members of a given column are assumed to be similar values, and all members of a row are assumed......


View the rest of this paper...

Approximate Word Count: 1398
Approximate Pages: 6 (250 words per double-spaced page)

Why should you join Frat Files?

  • - It's safe, secure, and private.
  • - Instant access to over 100,000 papers. New papers are added hourly.
  • - Fast and reliable customer support.

Credit Card

Bank Account

PayPal

Similar Essays

  1. Database Concepts

    Database Concepts. Database Concepts, what are Databases all about? I ... The
    course that I am taking is entitled Database Concepts. This ...

  2. Dbm/380 Database Concepts – Weekly Summary

    DBM/380 Database Concepts – Weekly Summary. DBM/380 Database Concepts –
    Weekly Summary Week 1 1. What concepts did I learn in ...

  3. Database Concepts

    Database Concepts. Databases have been in ... long run. References Foote, KE
    and Huebner, DJ (1996). Database Concepts. Retrieved on ...

  4. Sql Server 2005 -- Database Concepts

    Sql Server 2005 -- Database Concepts. Database Management Systems Database Concepts
    Structured Query Language communicates with databases ...

  5. Basic Database Design Concepts

    Basic Database Design Concepts. The Fundamentals of Database Design To
    end up with a good ‘relational database’ application, you ...