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CS-430: Operating Systems Week 6

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CS4432: Database Systems II

CS4432: Database Systems II. Data Storage (Sections 11.2, 11.3, 11.4, 11.5). Data Storage: Overview. How does a DBMS store and manage large amounts of data? (today, tomorrow) What representations and data structures best support efficient manipulations of this data? (next week).

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Chapter 6

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CSG131 Summary

CSG131 Summary. Donghui Zhang. What we learned. Storage (Chp 8 & 9) B+-tree (Chp 10) Hash index (Chp 11) External sort (Chp 13) Query evaluation Concurrency control (Chp 17) Recovery (Chp 18) Project: simple DBMS implentation, NEUStore SB-tree, R-tree. Tracks. Arm movement.

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Project

Project. Create a DASH-compliant (Dynamic Adaptive Streaming over HTTP) streaming system. Goals (1). Capture a video on an ASUS Transformer tablet computer and store it as an MP4 file. Split the MP4 file into streamlets , i.e., 3 second long video files.

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Chapter 11 I/O Management and Disk Scheduling

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Device Management

(Lecture 7b). Device Management. CS5002 Operating Systems Dr. Jose M. Garrido. Disk Drive Mechanism. Disk Structure. Disk drives are addressed as large 1-dimensional arrays of logical blocks , where the logical block is the smallest unit of transfer.

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Chapter 7 - Device Management

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CS 540 Database Management Systems

CS 540 Database Management Systems. RDBMS Architecture and Data Storage. Database Implementation. User Requirements. SQL. Physical Storage . Conceptual Design. Schema. Data. Relational Model. Entity Relationship(ER) Model. Files and Indexes. The big advantage of RDBMS.

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CS 405G: Introduction to Database Systems

CS 405G: Introduction to Database Systems. 25 Exercise Chen Qian University of Kentucky. Project presentation. Demonstrate all functionalities of your application Complete some requests Introduce any additional features. The bonus part, if you have completed it. 4/24 Thursday.

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Chapter 12: Mass-Storage Systems

Chapter 12: Mass-Storage Systems. Overview of Mass Storage Structure. Magnetic disks provide bulk of secondary storage of modern computers Drives rotate at 60 to 250 times per second Transfer rate is rate at which data flow between drive and computer

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Section: Mass Storage Tapes, Disks, CDs, DVDs, RAID etc.

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colons : : : : : : : : : and semicolons ; ; ; ; ;

colons : : : : : : : : : and semicolons ; ; ; ; ; . within sentences. For use with Technical Editing, 3rd ed. This presentation distinguishes colons from semicolons so that you can use them accurately in sentences.

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Solid State Drive

Solid State Drive. Advantages. Reliability in portable environments and no noise No moving parts Faster start up Does not need spin up Extremely low read latency No seek time (25 us per page/4KB) Deterministic read performance The performance does not depends on the location of data.

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Storage Technologies

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computer hardware

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computer hardware

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Review Questions

Review Questions. Consider a disk drive with the following characteristics: 512 bytes / sector 63 sectors / track 200 tracks / surface 5 surfaces. a) How many cylinders are there?. b) How many sectors on each cylinder?. c) What is the capacity of the disk drive?.

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