TAILIEUCHUNG - Lecture Operating system principles - Chapter 12: File management

After studying this chapter, you should be able to: Describe the basic concepts of files and file systems, understand the principal techniques for file organization and access, define B-trees, explain file directories, understand the requirements for file sharing. | Chapter 12 File Management Overview File organisation and Access File Directories File Sharing Record Blocking Files Files are the central element to most applications file as an input to applications file as an output for long-term storage and for later access Desirable properties of files: Long-term existence Controlled sharing between processes Structure that is convenient for particular applications File Structure Fields and Records Fields Basic element of data ., student’s last name Contains a single value Characterized by its length and data type Records Collection of related fields ., a student record Treated as a unit File Structure File and Database File Collection of similar records Treated as a single entity and may be referenced by name Access control restrictions usually apply at the file level Database Collection of related data Explicit relationships exist among elements Consists of one or more files A Big Picture How to identify and locate a .

• Hệ điều hành
• File management
• File organization
• Operating system
• Lecture Operating system principles
• Hệ điều hành
• Computer system
• Operating systems
• Lecture Operating systems
• Embedded systems
• File directories
• Operating system concept
• Operating system concept (Ninth edition)
• Storage management
• Mass storage structure
• File system interface
• File system implementation
• Distributed file systems
• Computers
• Digital Basics
• Computer Basics
• Storage Devices
• Database Management Systems
• Disk Storage
• Basic File Structures
• Disk Storage Devices
• Files of Records
• Operations on Files
• Modern operating systems
• Processes and threads
• Memory management
• File systems
• Input output
• File system management
• Lecture Database management systems
• Database systems
• File based system
• Characteristics of the database
• Data dictionary
• Lecture Management Information Systems
• Bài giảng Hệ thống thông tin quản lý
• Foundations of Business Intelligence
• Information Management
• Managing data resources
• Traditional file environment
• Maintaining the Control File
• Oracle XML Applications
• database
• data management
• Oracle XML
• Performance Tuning
• XML Data
• Administration
• Internalsand design principles
• Bài giảng Hệ quản trị cơ sở dữ liệu
• Database definition
• Commercial applications
• File processing system
• File organizations
• Dense key index
• Non dense index
• Lecture Distributed Database Management Systems
• Distributed Database Management Systems
• Bài giảng Hệ quản trị cơ sở dữ liệu phân tán
• Traditional file processing system
• Database approach
• Distributed computing system
• Installing Windows 9x
• Windows File Management
• Installation Process
• Installing Windows 2000
• Disk Management
• Operating Systems Do
• Process Management
• Distributed Systems
• Computing Environments
• Remote Access Clients
• Different Management Servers
• The Configuration File
• Configuring Gateways
• SecureClient Features
• Endpoint Security VPN CLI
• Data Archiving
• File Format
• Scientific Computing
• Processing Algorithms
• MATLAB Using
• Large HD
• Data Versus Information
• File Processing Systems
• Database Development Process
• Analyzing Database Requirements
• Modeling Multiple Relationships
• Discovering computers fundamentals
• Computers fundamentals
• Database management
• The hierarchy of data
• Maintaining data
• File processing versus databases
• Principles of Database Management Systems
• Conventional indexes
• Hashing schemes
• Sequential File
• Dense Tradeoff
• Duplicate keys
• Deletion from sparse index
• Discovering Computers
• DatabaseDefine the term
• Design principles
• Uniprocessor scheduling
• Real time scheduling
• I O management and disk scheduling
• Embedded operating systems