'Sequential file' diaporamas de présentation

CS 277: Database System Implementation Notes 4: Indexing

CS 277: Database System Implementation Notes 4: Indexing. Arthur Keller. Chapter 4. Indexing & Hashing value. record. ?. value. Topics. Conventional indexes B-trees Hashing schemes. 10. 30. 50. 70. 90. 20. 40. 60. 80. 100. Sequential File. 70. 50. 30. 10. 110. 90.

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CS 245: Database System Principles Notes 4: Indexing

CS 245: Database System Principles Notes 4: Indexing. Hector Garcia-Molina. Chapter 4. Indexing & Hashing value. record. ?. value. Topics. Conventional indexes B-trees Hashing schemes. 10. 30. 50. 70. 90. 20. 40. 60. 80. 100. Sequential File. 70. 50. 30. 10. 110. 90.

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File Management

File Management. Chapter 12. File Management. File management system consists of system utility programs that run as privileged applications Input to applications is by means of a file Output is saved in a file for long-term storage. File Management Systems.

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File Management

File Management. File Management. File management system consists of system utility programs that run as privileged applications Input to applications is by means of a file Output is saved in a file for long-term storage. File System Properties. Long-term existence

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Data Files

Data Files. In all your projects so far, the user has entered information through text-boxes This input method is unsatisfactory for large quantities of data Many computer applications require data to be saved from one run to the next e.g. inventory records, customer files etc.

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CS4432: Database Systems II

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Visual Basic Programming II Lecture 5

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Examples for Project 2

Examples for Project 2. From Deital and Deital, Java: How to Program, Third Edition Reusable and flexible UI Data Records with Sequential and Random Access Files. // Fig. 17.4: BankUI.java // A reusable GUI for the examples in this chapter. package com.deitel.jhtp3.ch17;

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Yunsheng Liu

V. Data Storage Management. Yunsheng Liu. Software College, HUST 2007. 11. Data satisfying request. CPU. Request for data. Cache. Primary storage. EEPROM. Main Memory. Fresh Memory. Magnetic Disk. Secondary storage. CD-ROM. Optical Disk. Magnetic Tape. Tertiary storage.

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Lecture 12 Databases

Lecture 12 Databases. Databases. Most Common Computer Application Nothing More than a Collection of Files Filing Cabinet Uses Banking Telephone Call Centers Sales Schools Customer Data Internet Searches. Definition.

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Use of ICT in Data Management

Use of ICT in Data Management. AS Applied ICT. Contents. Database Management System. Functions in a Sequential File. Sequential Files. Hierarchical Database Management System. Processing a record. Index Sequential and Random Access File. Performing Functions.

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Product update XML Composer

Product update XML Composer. Peter Prager Canam Software Labs, Inc. Session 2F EDGE 2003 Barcelona, Spain. Agenda. Overview of XML Composer Architecture of XML processing Review of product features XML based external system interfaces Value proposition

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DBMS Physical Design

DBMS Physical Design. Physical design is concerned with the placement of data and selection of access methods for efficiency and ongoing maintenance. File Organization. Physical arrangement of the records of a file on secondary storage devices. Sequential Linked List Indexed Hashed.

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Relative Files

Relative Files. Relative Files. Data - Records are accessed in a file relative to the beginning of the file ACCT# 0001 will the first record in the file ACCT# 0534 will be the 534th record in the file Disk space must be reserved in advance

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DBMS Physical Design

DBMS Physical Design. Physical design is concerned with the placement of data and selection of access methods for efficiency and ongoing maintenance. File Organization. Physical arrangement of the records of a file on secondary storage devices. Sequential Linked List Indexed Hashed.

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Fundamental File Structure Concepts

Fundamental File Structure Concepts. Rizwan Rehman Centre for Computer Studies Dibrugarh University. Files. A file can be seen as A stream of bytes (no structure), or A collection of records with fields. A Stream File. File is viewed as a sequence of bytes:

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prepared by James T. Perry University of San Diego

prepared by James T. Perry University of San Diego. Ch 10: Data Files. Create data files Reading, writing, opening, closing Differentiate sequential & random files Trap user errors and handle them Fixed length strings in user data types Read/Write random data files Updating a random file

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Computer Programming in C Chapter 7

Computer Programming in C Chapter 7. 2013 ? ???? ????? ????????. 7 ? . Input/Output and Built-in Functions. ?? Standard I/O Formatted I/O File Access Variable Length Argument List Low Level I/O Memory Management . 1. I/O ? ?? ?? . Standard I/O Standard Input: Input from Keyboard

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