Patrick Ozoh (PhD)

  1)  One of the goals of database management is to secure information against system failure or tampering. Discus. 2)  Give an example of data integrity problems.  Define the following terms: (i) database, (ii) DBMS, (iii) entities and     relationships (iv) backup and recovery and (v) transaction processing     application.         3)  (a) What are the main types of action involved in databases?           (b) Briefly discuss each.             (c) Discuss the capabilities that should be provided by a DBMS.     4) (a) What is a file? (b) What are the terms commonly used in discussing structure of a file? (c) How can you distinguish one file from another? (d) What do you understand by file attributes? (e) List out and d...

Registration  is ongoing !!! Be a British Chartered Professional At the same time and same cost acquire the British Computer Society Chartered Institute of IT Professionals Foundation in Business Analysis certificate Add more value to your career. Be internationally relevant Register using the following link https://docs.google.com/forms/d/e/1FAIpQLSc95O9kEpLfxtqpwV5ofhS-qVv3AlDk7T2SfVRRMm829-VKEw/viewform Join the following group to get motr information and lecture materials https://chat.whatsapp.com/9n1rTFD8dM97pLYJVEZQec   Examination date is September 28 Registration closes on September 21 For more information contact patrick.ozoh@uniosun.edu.ng Tel: 08187231117  

Queuing Strategy Queuing theory is a powerful tool to analyze the daily phenomenon of waiting in line. Discover how to define queuing theory, how it started, why it’s important, and how it can be applied to real-life situations.    1. What is queuing theory? Queuing theory (or queueing theory) refers to the mathematical study of the formation, function, and congestion of waiting lines, or queues. At its core, a queuing situation involves two parts. 1.  Someone or something that requests a service—usually referred to as the customer, job, or request. 2.  Someone or something that completes or delivers the services—usually referred to as the server. To illustrate, let’s take two examples. When looking at the queuing situation at a bank, the customers are people seeking to deposit or withdraw money, and the servers are the bank tellers. When looking at the queuing situation of a printer, the customers are the requests that have been sent to the printer, and the server i...

Introduction A database management system (DBMS) is a collection of data and an integrated set of programs that access that data. The collection of data is often referred to as the database . Example: Dickinson keeps information about each student: name, Banner ID number, standing, address ... • this data makes up the database • programs (or parts of programs) are used to add new students, to change a student’s address or standing, to retrieve information about a student ... Goals of a DBMS: • manage large bodies of information • provide convenient and effiffifficient ways to store and access information • secure information against system failure or tampering • permit data to be shared among multiple users   1 File Processing Systems Why are DBMSs needed? Alternative: store information in fifiles, and write programs as needed to modify these fifiles and retrieve information. A file processing system is a collection of files and programs that access/modify these files. Typically, n...