ENVS 1500 Lecture Notes - Lecture 8: Computer Hardware, Management System

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ENVS 1500 Lecture 8 Notes Database Management
Introduction
Database management systems are at the core of most large modern information
technology systems.
File management provides the storage facility that makes database management
possible.
It also provides the capability that allows you to access files by name on your personal
computer.
We discuss the methods used to store, retrieve, and manipulate files.
We look at the methods used for accessing files and consider how the files are stored on
various peripheral devices.
We study the methods used to implement file directory systems, and consider why
some file access methods work better than others under different conditions.
Some of the most important algorithms and methods used internally to implement
various aspects of the operating system.
We begin with a discussion of a simple system that includes the key components
required to implement a multitasking system.
The remainder of the chapter focuses on primary and secondary storage scheduling, and
memory management.
The discussion of memory management includes a thorough discussion of virtual
storage.
We show how the operating system and computer hardware work together
synergistically to provide powerful primary storage management capability.
Other operating system issues are considered briefly.
The chapter concludes with a discussion of virtualization, a topic of considerable
importance in modern computer usage.
At the completion, you can expect to have a good understanding of the four major
components that make up a computer system
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