Database models and legacy systems

Assignment Help Basic Computer Science
Reference no: EM131204514

Database Models and Legacy Systems

Databases evolved from flat file systems. As technology advanced, the limitations of flat files became evident. The database model has evolved to meet the business needs of the time. As the information age evolved, organizations realized there was a need for a different type of management system, one that could store large amounts of data, retrieve the data quickly, secure the data, and share the data. Hierarchical and network database models evolved first, followed by relational and object-relational database models.

However, not all organizations have moved with the times. Often, older database systems still work well, and the cost and time needed to convert to a newer database model prohibit the change. A legacy system is one that uses old, outdated technology. Many businesses and government agencies continue to use legacy database systems consisting of older hierarchical and network technologies.

To prepare for this Discussion, identify a legacy system in a business or government agency (federal, state, or local). Many online sites can be used to identify existing legacy systems. With these thoughts in mind, respond to the following prompts:

  • Should the agency continue using a legacy system? What are the benefits and drawbacks of continuing to use the legacy database?
  • Discuss the needs of the agency and consider the benefits and limitations of each database model.

With these thoughts in mind, make a recommendation to keep the existing system or to upgrade to a new design based on your answers to the questions above.

Reference no: EM131204514

Size of the payload in the first fragment

In an IPv4 packet, the size of the payload in the first fragment, in octets, is equal to Total Length - (4 × IHL). If this value is less than the required minimum (8 octets

Subsequent packet having a non-zero offset

The second packet would be passed through most filter implementations because it does not have a zero fragment offset. Suggest a method that could be used by a packet filter t

Process and ways to handle problems

As part of the training process, your manager would like to evaluate how effective you are at this task, and asked that you complete a project: creating a three-part manual

Travel costs java application

Create an application named TravelCosts that is made up of a number of different classes. Create an abstract superclass called Transportation that has the following three fiel

Questions about tourist destinations

A travel agency is frequently asked questions about tourist destinations. For example, customers want to know details of the monthly climate (avg temp, humidity and precipit

Protocol combing the sliding window algorithm

Describe a protocol combing the sliding window algorithm with selective ACKs. Your protocol should retransmit promptly, but not if a frame simply arrives one or two position

Administration or a help desk professional

Interview someone at the company of your choice who handles network administration or a help desk professional who handles the administration of any of the operating systems

Program for the arduino uno microcontroller

Write a program for the Arduino UNO microcontroller to turn an LED at pin 5on for 1.75 sec, and off for 3.25 sec. one time only. Write a multi-line comment at the top of the


Write a Review

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd