'Sequential access' presentation slideshows

File Management

File Management. Chapter 10. Objectives. To explain the function of file systems To describe the interfaces to file systems To discuss file-system design tradeoffs, including access methods, file sharing, file locking, and directory structures To explore file-system protection

1.37k views • 106 slides

File-System Interface

File-System Interface. File Concept Access Methods Directory Structure File System Mounting File Sharing Protection. File Concept. Contiguous logical address space Types: Data numeric character binary Program. File Structure. None - sequence of words, bytes

1.3k views • 104 slides

Data Structures Arrays and Structs

960 views • 65 slides

Lecture 18 Ch. 10: File-System Interface Ch 11: File System Implementation

Lecture 18 Ch. 10: File-System Interface Ch 11: File System Implementation. Chapter 10: File-System Interface. File Concept Access Methods Directory Structure File-System Mounting File Sharing Protection. Objectives. To explain the function of file systems

627 views • 59 slides

Files and Streams

7. Files and Streams. OBJECTIVES. In this chapter you will learn: To create, read, write and update files. To use class File to retrieve information about files and directories. The Java input/output stream class hierarchy. The differences between text files and binary files.

681 views • 58 slides

Computer Systems

Computer Systems. COMPUTER GENERATIONS. 1. VACUUM TUBES: 1946-1959. COMPUTER GENERATIONS. 1. VACUUM TUBES: 1946-1959 2. TRANSISTORS: 1957-1963. COMPUTER GENERATIONS. 1. VACUUM TUBES: 1946-1959 2. TRANSISTORS: 1957-1963 3. INTEGRATED CIRCUITS: 1964-1979. COMPUTER GENERATIONS.

646 views • 53 slides

CS6290 Memory

585 views • 41 slides

Chapter 10: File-System Interface

Chapter 10: File-System Interface. File Concept Access Methods Directory Structure File-System Mounting File Sharing Protection. File Concept. Contiguous logical address space Types: Data numeric character binary Program. File Structure. None - sequence of words, bytes

470 views • 38 slides

Storage and File Organization

Storage and File Organization. Magnetic Hard Disk Mechanism. NOTE: Diagram is schematic, and simplifies the structure of actual disk drives. Magnetic Disks. Read-write head Positioned very close to the platter surface (almost touching it) Reads or writes magnetically encoded information.

1.04k views • 36 slides

Company Profile

860 views • 26 slides

File Handling

File Handling. Indexed Sequential Files. File Organisation and Access. File Organisation How is the file organised ? Within program and on storage media File Access How will you access the file ?. File Organisation. Indexed Sequential Have two parts Index File Body [Data]

552 views • 25 slides

Introduction to Databases

Introduction to Databases. Week 1, Day 1 (based on Ch 1 of Connolly and Begg). Introduction to Databases - Outline. Before Databases Some history not in the text File Based Approach Illustrated with real world problems Database Approach With simplified advantages & disadvantages.

366 views • 23 slides

Indexing

486 views • 20 slides

Disks and RAID

Disks and RAID. Outline. Disks Disk scheduling algorithms Redundancy in storage systems, RAID File Systems Overview of file system File system design Consistency and crash recovery Sharing files Unix file system. Sector. Disk Geometry. Disks have multiple platters

293 views • 19 slides

Storing Data On Your Computer

Storing Data On Your Computer. Chapter 12, Exploring the Digital Domain. In this chapter . . . You will learn about. how various storage technologies support processing how data is transferred to and from the processor two classes of secondary memory DASD SASD

345 views • 18 slides

Linked Lists

Linked Lists. Introduction. In linked list each item is embedded in a link Each item has two parts Data Pointer to the next item in the list Insert, Delete and Edit operations can be performed Each item of the list can only be accessed through the next pointer, unlike arrays.

608 views • 18 slides

Resource Selection in OSG & SAM-On-The-Fly

Parag Mhashilkar Fermi National Accelerator Laboratory Condor Week 2006 April 25, 2006. Resource Selection in OSG & SAM-On-The-Fly. Resource Selection in OSG. Overview Why Resource Selection Service? Resource Selection Service in OSG Collaborators Involved

303 views • 15 slides

215 views • 15 slides

VSAM ACCESS METHODS

VSAM ACCESS METHODS. Sequential Start at the beginning of the file and read the records in sequence by either a primary key or a foreign key (Alternate Index) Random Read a particular record from the file (usually by primary key) Dynamic

629 views • 14 slides

Mid Range Concepts

Mid Range Concepts. Chapter 11 Logical Files. Defining Keys. File Access: Direct Access : the storage device can go directly to the location and read the information stored there. Primary Key: Field whose value is unique for each record.

277 views • 10 slides