No Slide Title
... Lockable resources and lock escalation SQL Server can lock data at various levels, known as lockable resources. The ten levels form a hierarchy based on granularity, which refers to the amount of data the resource encompasses. A resource that encompasses more data than another resource is less ...
... Lockable resources and lock escalation SQL Server can lock data at various levels, known as lockable resources. The ten levels form a hierarchy based on granularity, which refers to the amount of data the resource encompasses. A resource that encompasses more data than another resource is less ...
Choosing the correct data movement technology
... Sites have agreed to work together (if necessary), so that a user at any site can access data anywhere in the network exactly as if the data were all stored at the user’s own site.” ...
... Sites have agreed to work together (if necessary), so that a user at any site can access data anywhere in the network exactly as if the data were all stored at the user’s own site.” ...
Document
... 1. Read and execution phase: Transaction Ti writes only to temporary local variables 2. Validation phase: Transaction Ti performs a ``validation test'' to determine if local variables can be written without violating serializability. 3. Write phase: If Ti is validated, the updates are applied to the ...
... 1. Read and execution phase: Transaction Ti writes only to temporary local variables 2. Validation phase: Transaction Ti performs a ``validation test'' to determine if local variables can be written without violating serializability. 3. Write phase: If Ti is validated, the updates are applied to the ...
Software Engineering Syllabus
... It is the duty of the ______ to accept commands in terms of the relational _____ and convert them into actions relative to the actual storage structure The simplest way for a DBMS to implement a relation is to store it as a __________ file To provide rapid access to entries, the DBMS would store the ...
... It is the duty of the ______ to accept commands in terms of the relational _____ and convert them into actions relative to the actual storage structure The simplest way for a DBMS to implement a relation is to store it as a __________ file To provide rapid access to entries, the DBMS would store the ...
Software Engineering Syllabus
... It is the duty of the ______ to accept commands in terms of the relational _____ and convert them into actions relative to the actual storage structure The simplest way for a DBMS to implement a relation is to store it as a __________ file To provide rapid access to entries, the DBMS would store the ...
... It is the duty of the ______ to accept commands in terms of the relational _____ and convert them into actions relative to the actual storage structure The simplest way for a DBMS to implement a relation is to store it as a __________ file To provide rapid access to entries, the DBMS would store the ...
slides
... • Chain commits the transaction (makes it durable) and starts a new transaction, but does not release locks – Individual transactions do not have to be consistent – Recovery is complicated (as before); rollforward required – No performance gain ...
... • Chain commits the transaction (makes it durable) and starts a new transaction, but does not release locks – Individual transactions do not have to be consistent – Recovery is complicated (as before); rollforward required – No performance gain ...
Proposal Presentation. - Computer Science
... Industry standard database benchmarks provide a platform for benchmarking various database products. The obtained results are used to compare and rank database products. ...
... Industry standard database benchmarks provide a platform for benchmarking various database products. The obtained results are used to compare and rank database products. ...
Access Data
... Bulk-log DB Recovery Setting • Bulk-log exactly like full recovery except it allows bypassing of transaction log by using special commands. • Logging is normally bypassed for bulk inserts of large amounts of stored data stored (eg batch processing) or actions like SELECT INTO based on another large ...
... Bulk-log DB Recovery Setting • Bulk-log exactly like full recovery except it allows bypassing of transaction log by using special commands. • Logging is normally bypassed for bulk inserts of large amounts of stored data stored (eg batch processing) or actions like SELECT INTO based on another large ...
Final Exam Study Guide Know what SQL stands for Know what
... Restrict access to the data such that a user can see and (sometimes) modify exactly what they need and no more. Summarize data from various tables which can be used to generate reports. ...
... Restrict access to the data such that a user can see and (sometimes) modify exactly what they need and no more. Summarize data from various tables which can be used to generate reports. ...
IT 141 – Information Systems 1
... Create a Database Add, edit and remove data from database View and modify the database ...
... Create a Database Add, edit and remove data from database View and modify the database ...
rdbms - Career Varsity
... are isolated, or protected, from the effects of concurrently scheduling other transactions. Durability : Once the DBMS informs the user that a transaction has been successfully completed, its effects should persist even if the system crashes before all its changes are reflected on disk. This prope ...
... are isolated, or protected, from the effects of concurrently scheduling other transactions. Durability : Once the DBMS informs the user that a transaction has been successfully completed, its effects should persist even if the system crashes before all its changes are reflected on disk. This prope ...
03/22/13
... Execution of one transaction is not affected by the operations of another since they do not overlap in time ...
... Execution of one transaction is not affected by the operations of another since they do not overlap in time ...
Designing for Performance - General Database
... FOR ALL rows from which to start If any other transaction(s) have ANY of these rows locked we will wait until ALL locks have been acquired before we can proceed. In the case of this update (because it’s highly selective and because indexes exist to make this possible) SQL Server will use row level l ...
... FOR ALL rows from which to start If any other transaction(s) have ANY of these rows locked we will wait until ALL locks have been acquired before we can proceed. In the case of this update (because it’s highly selective and because indexes exist to make this possible) SQL Server will use row level l ...
4_sql_recovery_1
... a transaction sees only data that was committed before the query (not the transaction) began. An Oracle query never reads dirty (uncommitted) data. – Because Oracle does not prevent other transactions from modifying the data read by a query, that data can be changed by other transactions between two ...
... a transaction sees only data that was committed before the query (not the transaction) began. An Oracle query never reads dirty (uncommitted) data. – Because Oracle does not prevent other transactions from modifying the data read by a query, that data can be changed by other transactions between two ...
InfiniteGraph
... Person user = (Person)WebGroupSampleDB.getNamedVertex(userName); Person friend = (Person)WebGroupSampleDB.getNamedVertex(friendName); ...
... Person user = (Person)WebGroupSampleDB.getNamedVertex(userName); Person friend = (Person)WebGroupSampleDB.getNamedVertex(friendName); ...
Data and Database Administration
... simultaneous access to data can result in interference and data loss Solution – Concurrency Control The process of managing simultaneous operations against a database so that data integrity is maintained and the operations do not interfere with each other in a multi-user environment ...
... simultaneous access to data can result in interference and data loss Solution – Concurrency Control The process of managing simultaneous operations against a database so that data integrity is maintained and the operations do not interfere with each other in a multi-user environment ...
Word Document - Dr. Selim Akyokuş
... application of database systems. Brief review of entity-relationship, database models and an in-depth coverage of the relational model including relational algebra and calculi, query languages, normalization theory, integrity and security, storage structures, access methods, query processing, transa ...
... application of database systems. Brief review of entity-relationship, database models and an in-depth coverage of the relational model including relational algebra and calculi, query languages, normalization theory, integrity and security, storage structures, access methods, query processing, transa ...
Physical Design
... Transaction usage map for some sample transactions showing expected occurrences ...
... Transaction usage map for some sample transactions showing expected occurrences ...
Slide 1
... information in a regular structure, usually but not necessarily in a machine-readable format accessible by a computer. http://en.wiktionary.org/wiki/database ...
... information in a regular structure, usually but not necessarily in a machine-readable format accessible by a computer. http://en.wiktionary.org/wiki/database ...
case-study-esss-milestone-10-database-design
... SADM 7/ed – ESSS CASE STUDY - Milestone 10: Database Design ...
... SADM 7/ed – ESSS CASE STUDY - Milestone 10: Database Design ...
SQL Server Database Object Naming Standard
... Special case exception: For look-up tables (reference tables), such as a State table (KS = Kansas), use the prefix "lut", creating lutState in this case. This has the advantages of distinguishing these tables as apart from tables that represent business entities and transactions and sorts them toget ...
... Special case exception: For look-up tables (reference tables), such as a State table (KS = Kansas), use the prefix "lut", creating lutState in this case. This has the advantages of distinguishing these tables as apart from tables that represent business entities and transactions and sorts them toget ...
Chapter 1 Computer Basics
... • A database is a collection of data that is logically, but not necessarily physically, coherent. • A database management system defines, creates, and maintains a database. • It also allows users controlled access to data in the database. ...
... • A database is a collection of data that is logically, but not necessarily physically, coherent. • A database management system defines, creates, and maintains a database. • It also allows users controlled access to data in the database. ...
Chapter 11
... An impasse that results when two or more transactions have locked common resources, and each waits for the other to unlock their resources ...
... An impasse that results when two or more transactions have locked common resources, and each waits for the other to unlock their resources ...