PPT-CHAPTER 16 Disk Storage, Basic File Structures, Hashing, and Modern Storage Architectures

161 Introduction Databases typically stored on magnetic disks Accessed using physical database file structures Storage hierarchy Primary storage CPU main memory cache memory Secondary storage. Presentation by:. Andrew Baker. Dan Dunning. Sean Young. Understanding Storage. A storage device is any type of equipment used for storing information.. The earliest form of storage is paints and brushes.. Hard disks. Magnetic disks. Magnetic disks provide bulk of secondary storage of modern computers. Drives rotate at 60 to 200 times per second. Transfer rate. is rate at which data flow between drive and computer. 1. Copyright © 2007 . Ramez Elmasri and Shamkant B. Navathe. Chapter 13. Disk Storage, Basic File Structures, and Hashing. Slide 13- . 3. Chapter Outline. Disk Storage Devices. Files of Records. Operations on Files. Rows, Columns, LSM trees. COS 518: . Advanced Computer Systems. Lecture . 7. Michael Freedman. 2. Basic row-based storage. Id. BIGINT. Name. CHAR(32). Age. INT. Gender. SMALLINT. Birthday. DATE. 8. 32. List Capacities. Describe Hard Disk Characteristics. Explain Cloud Storage Advantages. Differentiate Between CDs & DVDs. Explain Miniature Storage Use. Identify the Uses for Tape. Storage. Holds Data, Instructions, & Information. Objectives. Skills/Concepts. Objective Domain Description. Objective Domain Number. Identifying Storage Technologies. Identify storage technologies. 4.1. Introducing. Redundant Arrays of Independent Disks. Alhashimi. Storage. Storage . holds data, instructions and information for . future use. .. Storage medium,. also called . secondary storage, . . Is the physical material on which a computer keeps data, instructions and information.. Lecture 12. Disk Storage Devices. Basic unit of data stored in disks is a single . bit . to represent data in 0/1 form.. Bits . are grouped into . Byte.. The capacity of disk: the amount of bytes it can store.. Ramez Elmasri and Shamkant B. Navathe. Chapter 13. Disk Storage, Basic File Structures, and Hashing. Slide 13- . 3. Chapter Outline. Disk Storage Devices. Files of Records. Operations on Files. Unordered Files. Chapter 6 — Storage and Other I/O Topics — . 2. Introduction. I/O devices can be characterized by. Behaviour: input, output, storage. Partner: human or machine. Data rate: bytes/sec, transfers/sec. Storage. The zeros and ones in the input devices, output devices and process devices are in electronic form and are lost when the computer is turned off.. To preserve the zeros and ones when the computer is turned off they must be sent to storage devices. Storage. The zeros and ones in the input devices, output devices and process devices are in electronic form and are lost when the computer is turned off.. To preserve the zeros and ones when the computer is turned off they must be sent to storage devices. File Organization. The database is stored as a collection of . files. . Each file is a sequence of . records. . A record is a sequence of fields.. One approach. Assume record size is fixed. Each file has records of one particular type only. Chapter 11: Mass-Storage Systems. Overview of Mass Storage Structure. HDD Scheduling. NVM Scheduling. Error Detection and Correction. Storage Device Management. Swap-Space Management. Storage Attachment.