Chapter 14: Concurrency Control
... New request is added to the end of the queue of requests for the data item, and granted if it is compatible with all earlier locks Unlock requests result in the request being deleted, and later requests are checked to see if they can now be granted If transaction aborts, all waiting or granted reque ...
... New request is added to the end of the queue of requests for the data item, and granted if it is compatible with all earlier locks Unlock requests result in the request being deleted, and later requests are checked to see if they can now be granted If transaction aborts, all waiting or granted reque ...
2-3 Information on the OSPAR RID database development activities
... S1: Improve existing solution. Only one organization hosts the one active (i.e. “production”) version of the database. The host handles tasks like import into the database. S2: Improve existing solution. All CPs can import data, which is synchronized into the web version. S3: Database is re-develope ...
... S1: Improve existing solution. Only one organization hosts the one active (i.e. “production”) version of the database. The host handles tasks like import into the database. S2: Improve existing solution. All CPs can import data, which is synchronized into the web version. S3: Database is re-develope ...
Chapter 16: Concurrency Control Lock-Based Protocols Lock
... 3. Write phase: If Ti is validated, the updates are applied to the database; otherwise, Ti is rolled back. ! The three phases of concurrently executing transactions can be interleaved, but each transaction must go through the three phases in that order. ! Also called as optimistic concurrency contro ...
... 3. Write phase: If Ti is validated, the updates are applied to the database; otherwise, Ti is rolled back. ! The three phases of concurrently executing transactions can be interleaved, but each transaction must go through the three phases in that order. ! Also called as optimistic concurrency contro ...
ADO Connection String Samples
... MS DataShape. Also included are ADO.NET connection strings for MySQL, ODBC, OLE DB, Oracle, and SQL Server .NET Data Providers. These sample connection strings are compiled by Carl Prothman, a Microsoft ASP.NET MVP and Microsoft Certified Professional (MCP) If you have an ADO or ADO.NET connection s ...
... MS DataShape. Also included are ADO.NET connection strings for MySQL, ODBC, OLE DB, Oracle, and SQL Server .NET Data Providers. These sample connection strings are compiled by Carl Prothman, a Microsoft ASP.NET MVP and Microsoft Certified Professional (MCP) If you have an ADO or ADO.NET connection s ...
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... QueryViz allows novice SQL users to browse through existing repositories and thus intuitively familiarize themselves with the logical patterns behind the SQL syntax. Despite their intuitive appeal, graphical representations are not always better [11] and despite much effort and many visual languages ...
... QueryViz allows novice SQL users to browse through existing repositories and thus intuitively familiarize themselves with the logical patterns behind the SQL syntax. Despite their intuitive appeal, graphical representations are not always better [11] and despite much effort and many visual languages ...
Midterm 2 Review - Department of Computer Science
... 4.Know the characteristics of superkey, candidate key, primary key, and foreign key. 5.Know the rules of relational integrity and referential integrity. 6. Be able to recognize and read relational algebra statements with the primary operators. 7.Be able to recognized simple relational calculus state ...
... 4.Know the characteristics of superkey, candidate key, primary key, and foreign key. 5.Know the rules of relational integrity and referential integrity. 6. Be able to recognize and read relational algebra statements with the primary operators. 7.Be able to recognized simple relational calculus state ...
Kroenke-Auer-DBP-e13-PPT
... • Some of the important standards: – ODBC (Open Database Connectivity) is the early standard for relational databases. – OLE DB is Microsoft’s older object-oriented interface for relational and other databases. – The .NET Framework and ADO.NET are the current Microsoft “dot NET” data access standard ...
... • Some of the important standards: – ODBC (Open Database Connectivity) is the early standard for relational databases. – OLE DB is Microsoft’s older object-oriented interface for relational and other databases. – The .NET Framework and ADO.NET are the current Microsoft “dot NET” data access standard ...
Partition Maintenance Effects
... tables from production to test environment became unmanageable. Query tuning was complicated by the sheer volume of data, resulting in sub-optimal performance for both index and full table scans. Partitioning was introduced to relieve these issues and allow continued growth of these large tables whi ...
... tables from production to test environment became unmanageable. Query tuning was complicated by the sheer volume of data, resulting in sub-optimal performance for both index and full table scans. Partitioning was introduced to relieve these issues and allow continued growth of these large tables whi ...
Formal Relational Query Languages
... G1, G2 …, Gn is a list of attributes on which to group (can be empty) ...
... G1, G2 …, Gn is a list of attributes on which to group (can be empty) ...
Document
... Extended E-R model — Extensions to the Chen model. Information Engineering (IE) — James Martin (1990); it uses “crow’s foot” notation, is easier to understand. IDEF1X — A national standard developed by the National Institute of Standards and Technology(NIST) . Unified Modeling Language (UML) ...
... Extended E-R model — Extensions to the Chen model. Information Engineering (IE) — James Martin (1990); it uses “crow’s foot” notation, is easier to understand. IDEF1X — A national standard developed by the National Institute of Standards and Technology(NIST) . Unified Modeling Language (UML) ...
Exadata Smart Flash Cache Features and the Oracle Exadata
... having to take any action. The Oracle Flash Cache is smart because it knows when to avoid trying to cache data that will never be reused or will not fit in the cache. The Oracle Database and Exadata storage allow the user to provide directives at the database table, index and segment level to ensure ...
... having to take any action. The Oracle Flash Cache is smart because it knows when to avoid trying to cache data that will never be reused or will not fit in the cache. The Oracle Database and Exadata storage allow the user to provide directives at the database table, index and segment level to ensure ...
Answer sets for consistent query answering in
... database repairs could be used for conflict resolution. Notice that consistent answers are non-monotonic in the sense that adding information to the original database, may cause loosing previous consistent answers. In consequence, a non-monotonic semantics for the specification (or its consequences) s ...
... database repairs could be used for conflict resolution. Notice that consistent answers are non-monotonic in the sense that adding information to the original database, may cause loosing previous consistent answers. In consequence, a non-monotonic semantics for the specification (or its consequences) s ...
PPT - Electrical and Computer Engineering Department
... G1, G2 …, Gn is a list of attributes on which to group (can be empty) ...
... G1, G2 …, Gn is a list of attributes on which to group (can be empty) ...
Using SQL in an Application - Computer Science, Stony Brook
... application program in two different ways: Statement Level Interface (SLI): Application program is a mixture of host language statements and SQL statements and directives Call Level Interface (CLI): Application program is written entirely in host language SQL statements are values of string variable ...
... application program in two different ways: Statement Level Interface (SLI): Application program is a mixture of host language statements and SQL statements and directives Call Level Interface (CLI): Application program is written entirely in host language SQL statements are values of string variable ...
Instructional Resources: Database Management
... Vitera advertises that their PMS integrates fully with their own EHR product (http://www.viterahealthcare.com/solutions/intergy/Pages/IntergyPracticeManagement.aspx) but, not surprisingly, does not make it easy to tell what EHRs from other vendors (if any) could do the same. Students may find some r ...
... Vitera advertises that their PMS integrates fully with their own EHR product (http://www.viterahealthcare.com/solutions/intergy/Pages/IntergyPracticeManagement.aspx) but, not surprisingly, does not make it easy to tell what EHRs from other vendors (if any) could do the same. Students may find some r ...
Technical Overview of DPM 2007
... Enable end-users to perform their own recoveries Remove tapes from branch offices and centralize ...
... Enable end-users to perform their own recoveries Remove tapes from branch offices and centralize ...
1.1 Introduction to Databases and Systems
... database, data about students, faculty, courses, students taking courses, faculty teaching courses and faculty advising students is related and represents information concerning the academic activities of the college. On the other hand, data about course schedules, bus schedules, and swimming pool h ...
... database, data about students, faculty, courses, students taking courses, faculty teaching courses and faculty advising students is related and represents information concerning the academic activities of the college. On the other hand, data about course schedules, bus schedules, and swimming pool h ...
dataset Documentation
... a database isn’t the simplest solution for storing a bunch of structured data. This is what dataset is going to change! dataset provides two key functions that make using SQL databases in Python a breeze: • A simple abstraction layer removes most direct SQL statements without the necessity for a ful ...
... a database isn’t the simplest solution for storing a bunch of structured data. This is what dataset is going to change! dataset provides two key functions that make using SQL databases in Python a breeze: • A simple abstraction layer removes most direct SQL statements without the necessity for a ful ...
Weak Entity Sets
... attributes or participate in relationships that do not apply to the higher-level entity set. Depicted by a triangle component labeled ISA Attribute inheritance – a lower-level entity set inherits all the ...
... attributes or participate in relationships that do not apply to the higher-level entity set. Depicted by a triangle component labeled ISA Attribute inheritance – a lower-level entity set inherits all the ...
Chapter 14: Query Optimization
... tuples that could be useful for a later operation. Generating the result of r1 r2 r3 sorted on the attributes common with r4 or r5 may be useful, but generating it sorted on the attributes common only r1 and r2 is not useful. Using merge-join to compute r1 r2 r3 may be costlier, but may provide ...
... tuples that could be useful for a later operation. Generating the result of r1 r2 r3 sorted on the attributes common with r4 or r5 may be useful, but generating it sorted on the attributes common only r1 and r2 is not useful. Using merge-join to compute r1 r2 r3 may be costlier, but may provide ...
Database Theory - Binus Repository
... Providing multiple interfaces to different classes of users. Representing complex relationships among data. Enforcing integrity constraints on the database. Providing backup and recovery services. Potential for enforcing standards. Flexibility to change data structures. Reduced application developme ...
... Providing multiple interfaces to different classes of users. Representing complex relationships among data. Enforcing integrity constraints on the database. Providing backup and recovery services. Potential for enforcing standards. Flexibility to change data structures. Reduced application developme ...
SQL Server 2005 Security Overview for
... SQL Server 2005 is secure out of the box when you install it, with default settings set safely. Features that are not required by a basic database server are left uninstalled, aiming for a reduced surface area. Since by default not all features are enabled across all systems, a heterogeneity is intr ...
... SQL Server 2005 is secure out of the box when you install it, with default settings set safely. Features that are not required by a basic database server are left uninstalled, aiming for a reduced surface area. Since by default not all features are enabled across all systems, a heterogeneity is intr ...
Oracle Database
Oracle Database (commonly referred to as Oracle RDBMS or simply as Oracle) is an object-relational database management system produced and marketed by Oracle Corporation.Larry Ellison and his two friends and former co-workers, Bob Miner and Ed Oates, started a consultancy called Software Development Laboratories (SDL) in 1977. SDL developed the original version of the Oracle software. The name Oracle comes from the code-name of a CIA-funded project Ellison had worked on while previously employed by Ampex.