PPT-Chapter 13: Data Storage Structures

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. 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. Characteristics of a variable of a specific ‘data type’ . has specific values or range of values that it can hold. Ex. char variables can hold only characters defined by the ASCII or extended ASCII code sets (i.e. 0 to 255). 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. Chapter Contents. Section A: Personal Computer Basics. Section B: Microprocessors and Memory. Section C: Storage Devices. Section D: Input and Output Devices. Section E: Hardware Security. Chapter 2: Computer Hardware. Chapter 3: Input, Output, and Storage. Learning Objectives:. Define input and describe the available types of keyboards and pointing devices. Describe scanning and image-capturing device types and features. 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.. Shared Preferences. SQLite. Chapter objectives:. Data storage methods. Understand what Shared Preferences are used for. Key-value pairs. File-based Storage. The differences between internal storage and external storage. 16.1 Introduction. Databases typically stored on magnetic disks. Accessed using physical database file structures. Storage hierarchy. Primary storage. CPU main memory, cache memory. Secondary storage. 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. Lecture for CPSC 5155. Edward Bosworth, Ph.D.. Computer Science Department. Columbus State University. Chapter 6 — Storage and Other I/O Topics — . 2. Introduction. I/O devices can be characterized by. Chapter 5: Decision Structures. 2. Objectives. Use . the . GroupBox. object. Place . RadioButton. objects in . applications. Display a message box. Make decisions using If…Then statements. Make decisions using If…Then…Else statements. Systems and Interface. Chapter 13 Objectives. Appreciate the role of enterprise storage as a distinct architectural entity.. Expand upon basic I/O concepts to include storage protocols.. Understand the interplay between data communications and storage architectures.. Locate and Transfer data. Floppy Disk. Small files to be transported. Secondary Storage. Primary Storage. Hard Disk. CDs and DVDs. Miniature Storage Media. Tape. Items waiting to be interpreted and executed by processor. IMPROVED RURAL - LEVEL STORAGE STRUCTURES. 1) Bitumen/ coal tar drum. 2) . Hapur. bin/ . Kothis. 3) Udaipur bin. 4) Stone bin. 5) Bamboo bin. 6) Baked clay bin. 7) PKV bin. 8) The ". Pusa. " bin..