• Study Resource
  • Explore
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Course Schedule - Skills Commons
Course Schedule - Skills Commons

... Demonstrate good data normalization design techniques ...
CSC 742: Database Management Systems
CSC 742: Database Management Systems

... Some of the topics are important but are either quite straightforward or not a main focus of this course. These topics will be identified as self-study topics on the course web page. Your knowledge of them will be evaluated as appropriate through exams, homework, programming assignments, or the proj ...
Ch1 - Crystal
Ch1 - Crystal

... extracted from databases, and allow user interaction with databases by typing in form boxes. Script programming languages such as PHP and JavaScript allow generation of dynamic Web pages (see Ch. 14), and provide for user querying of databases by typing selection keywords (e.g. flight ...
Chapter 17 - Spatial Database Group
Chapter 17 - Spatial Database Group

... versus local processing costs depends on network characteristics.  There are many more possible access plans for a distributed query. ...
Best Approaches To Database Auditing
Best Approaches To Database Auditing

... Resilient to system failures – Audit data is never lost; because it uses the same recovery mecagnism as the DBMS ...
Relational Database
Relational Database

... – A table is not allowed to have 2 different rows that have the same value for the key – Database systems enforce key constraints • By blocking any attempt to modify a table that will result in a violation of the key constraint ...
distributed database architecture and database link
distributed database architecture and database link

... ORACLE CONNECTIVITY CONCEPTS ...
Distributed Databases - Lecture Slides
Distributed Databases - Lecture Slides

... • Faster and Faster Access! We have data applications that need to process data at very high speeds: 10,000s transactions per second! SINGLE-PROCESSOR DBMS AREN’T UP TO THE JOB! ...
Chapter 14
Chapter 14

... Insertion problem. To identify a unique record, we have to use the customer number, order number, and item number. That means these three fields together form the primary key. If we want to insert a new customer who hasn’t placed an order yet, then the order number and item number fields would be em ...
ch25
ch25

... proceed if it does not require any data from site outside partition in which it is initiated.  Otherwise, transaction must wait until sites it needs access to are available.  If data is replicated, procedure is much more complicated. ...
From File Systems to Databases Importance of DBMS
From File Systems to Databases Importance of DBMS

... empl from its recursive definition. The final result is called the fixed point of the recursive view ...
How Databases Work For Records Management Presented By Joe Gentry
How Databases Work For Records Management Presented By Joe Gentry

... Personal Organizer Human Resources Manager ...
Stasis: Flexible Transactional Storage Russell Sears and Eric Brewer
Stasis: Flexible Transactional Storage Russell Sears and Eric Brewer

... Through examples and their good performance, we show how Stasis efficiently supports a wide range of uses that fall in the gap between database and file system technologies, including persistent objects, graph- or XMLbased applications, and recoverable virtual memory [42]. For example, on an object ...
Multi-user Databases
Multi-user Databases

... Two-Phased Resource Locking • Two-phased locking, whereby locks are obtained as they are needed – A growing phase, whereby the transaction continues to request additional locks – A shrinking phase, whereby the transaction begins to release the locks ...
cs447 chap4
cs447 chap4

... • ExecuteReader returns a SqlDataReader object, which contains the results of the query. • A SqlDataReader object reads and returns the results one by one, in a forward-only and read-only manner. The good news about the SqlDataReader is that it represents the fastest way to read data from the databa ...
Enabling Database-as-a-Service (DBaaS) within Enterprises or
Enabling Database-as-a-Service (DBaaS) within Enterprises or

... database server, and few apps today are designed to do so. As a result, most cloud providers have chosen to offer managed database software hosted on a virtual machine (VM). Such offerings – really nothing more than “Database-on-a-VM” – have been labeled DBaaS, but these solution do not actually sup ...
tong - Cal State LA
tong - Cal State LA

... • Search submission interface which lets you access Paracel algorithms without entering the command-line environment ...
Chap11
Chap11

... b. DBMS capabilities. An important DBMS capability is whether it will support a query that references data from more than one node. If not, then replication is a better candidate than partitioning schemes. c. Performance implications. Replication means that each node is periodically refreshed. When ...
Lecture16_Databases
Lecture16_Databases

... – Combines two tables, but it doesn’t necessarily produce all pairings – Match on common fields Table1 ...
Practice 1
Practice 1

... C) are not true DBMS products D) are really just programming languages with generalized file-processing capabilities E) have poor response time ...
CS F212: Database Systems - Computer Science & Information
CS F212: Database Systems - Computer Science & Information

... • A database contains information about a particular enterprise or a particular application. ...
PPT - Courses - University of California, Berkeley
PPT - Courses - University of California, Berkeley

... database, DA and DBA are responsible for developing procedures that ensure the integrity and security of the database during the update process. • Specific responsibility for data collection, editing and verification must be assigned • Quality assurance must be practiced to protect and audit the dat ...
DBAdminFund_PPT_1.4
DBAdminFund_PPT_1.4

... The DROP TABLE statement removes the table and all its data. In this code, we remove the table Grant_info and all the table’s data. DROP TABLE Grant_info ...
Remote Pointcut - A Language Construct for Distributed AOP
Remote Pointcut - A Language Construct for Distributed AOP

...  When writing the test code, we must consider two concerns: ...
cs440outline - Computer Science Home
cs440outline - Computer Science Home

... e) Design and implement a practical database that meets a specific set of criteria. f) Describe the importance of ODBC or open database connectivity. g) Explain the trends in database designs and applications, particularly the Web based database systems. h) Describe database administrative functions ...
< 1 ... 75 76 77 78 79 80 81 82 83 ... 150 >

Serializability

In concurrency control of databases, transaction processing (transaction management), and various transactional applications (e.g., transactional memory and software transactional memory), both centralized and distributed, a transaction schedule is serializable if its outcome (e.g., the resulting database state) is equal to the outcome of its transactions executed serially, i.e., sequentially without overlapping in time. Transactions are normally executed concurrently (they overlap), since this is the most efficient way. Serializability is the major correctness criterion for concurrent transactions' executions. It is considered the highest level of isolation between transactions, and plays an essential role in concurrency control. As such it is supported in all general purpose database systems. Strong strict two-phase locking (SS2PL) is a popular serializability mechanism utilized in most of the database systems (in various variants) since their early days in the 1970s.Serializability theory provides the formal framework to reason about and analyze serializability and its techniques. Though it is mathematical in nature, its fundamentals are informally (without mathematics notation) introduced below.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report