HyperledgerFabric_LedgerV1_20170315
... • Transaction simulation does not support Read Your own Writes. GetState() always retrieves from state database. • At commit time, validation is required to ensure conditions at simulation time (ReadSet) are still valid. • For key-based queries (GetState), validation step does a simple MVCC check on ...
... • Transaction simulation does not support Read Your own Writes. GetState() always retrieves from state database. • At commit time, validation is required to ensure conditions at simulation time (ReadSet) are still valid. • For key-based queries (GetState), validation step does a simple MVCC check on ...
Databases 2012 Recovery - Department of Computer Science
... The Undo/Redo Algorithm Following a failure, the following is done. • Redo all transactions for which the log has both “start” and “commit” entries. • Undo all transactions for which the log has “start” entry but no “commit” entry. ...
... The Undo/Redo Algorithm Following a failure, the following is done. • Redo all transactions for which the log has both “start” and “commit” entries. • Undo all transactions for which the log has “start” entry but no “commit” entry. ...
ORACLE DATABASE 12c »
... leading RDBMS in all areas, including performance, security, high availability, disaster recovery and ease of administration. Multi-Tenancy Oracle Database 12c introduces a new database architecture that uses six times less hardware, and is five times more scalable than before! The new architecture, ...
... leading RDBMS in all areas, including performance, security, high availability, disaster recovery and ease of administration. Multi-Tenancy Oracle Database 12c introduces a new database architecture that uses six times less hardware, and is five times more scalable than before! The new architecture, ...
2. Relational-Databases-Fundamental-Concepts
... Creating / altering / deleting tables and relationships between them (database schema) Adding, changing, deleting, searching and retrieving of data stored in the tables Support for SQL language ...
... Creating / altering / deleting tables and relationships between them (database schema) Adding, changing, deleting, searching and retrieving of data stored in the tables Support for SQL language ...
CS206 --- Electronic Commerce
... If Sally = (max)(min) and Joe = (del)(ins) are each transactions, and Sally runs with isolation level SERIALIZABLE, then she will see the database either before or after Joe runs, but not in the middle. ...
... If Sally = (max)(min) and Joe = (del)(ins) are each transactions, and Sally runs with isolation level SERIALIZABLE, then she will see the database either before or after Joe runs, but not in the middle. ...
Concurrency Control Chapter Handbook of Database Technology
... this order cannot ever be modified in transforming a history consisting of multiple transactions. Of course there can also be an Aborted transaction Ti ending with an Ai. A Complete History H (in a centralized database -- no parallelism) is defined to contain all the operations from a set of Committ ...
... this order cannot ever be modified in transforming a history consisting of multiple transactions. Of course there can also be an Aborted transaction Ti ending with an Ai. A Complete History H (in a centralized database -- no parallelism) is defined to contain all the operations from a set of Committ ...
Chapter>>
... COMMIT, and ROLLBACK. How do these statements vary across DBMSs? Ans: The START TRANSACTION and COMMIT statements define the statements in a transaction. Any other SQL statements between them are part of the transaction. The ROLLBACK statement causes all effects of a transaction to be removed. Some ...
... COMMIT, and ROLLBACK. How do these statements vary across DBMSs? Ans: The START TRANSACTION and COMMIT statements define the statements in a transaction. Any other SQL statements between them are part of the transaction. The ROLLBACK statement causes all effects of a transaction to be removed. Some ...
Database Concept
... A database transaction may be defined as a group (one or more) of database operations which need to be treated as one atomic unit which may either succeed or fail. That is all the database operations must succeed or all the database operations must fail. If this is not the case tasks can be half com ...
... A database transaction may be defined as a group (one or more) of database operations which need to be treated as one atomic unit which may either succeed or fail. That is all the database operations must succeed or all the database operations must fail. If this is not the case tasks can be half com ...
Kroenke-DBP-e10-PPT-Chapter09
... results that are consistent with the results that would have occurred if they had run separately • Two-phased locking is one of the techniques used to achieve serializability ...
... results that are consistent with the results that would have occurred if they had run separately • Two-phased locking is one of the techniques used to achieve serializability ...
Design and Implementation of Database Intrusion Detection System
... with data that changes its value with time. This intrusion detection model observes the database behavior at the level of sensor transaction. If a transaction attempts to update a temporal data which has already been updated in that period, an alarm is raised. Wenhui et al. [8] proposed a two-layer ...
... with data that changes its value with time. This intrusion detection model observes the database behavior at the level of sensor transaction. If a transaction attempts to update a temporal data which has already been updated in that period, an alarm is raised. Wenhui et al. [8] proposed a two-layer ...
DatabaseSpy Multi-database Tool
... The powerful query, design, compare, and convert tool for all major databases ...
... The powerful query, design, compare, and convert tool for all major databases ...
KOLEJ YAYASAN PELAJARAN MARA KUANTAN
... 1. Understand the basic concept of Database 2. The architecture of Database 3. Understand the 3 model of Database which are ER Model, Relational Model and FD Diagram. 4. Normalization concept. 5. Discuss and understand the issues and problems arise in Database ...
... 1. Understand the basic concept of Database 2. The architecture of Database 3. Understand the 3 model of Database which are ER Model, Relational Model and FD Diagram. 4. Normalization concept. 5. Discuss and understand the issues and problems arise in Database ...
Best practices for packaging database applications
... database. If an automated system is to assist in such an upgrade, it should be considered as a part of the package upgrade process; failure to upgrade the database should be considered a failure to upgrade the package. This is the only way to safely guarantee the chance to reattempt the upgrade with ...
... database. If an automated system is to assist in such an upgrade, it should be considered as a part of the package upgrade process; failure to upgrade the database should be considered a failure to upgrade the package. This is the only way to safely guarantee the chance to reattempt the upgrade with ...
DatabaseSpy Multi-database Tool
... The powerful query, design, compare, and convert tool for all major databases ...
... The powerful query, design, compare, and convert tool for all major databases ...
PL/SQL provides the following statements for transaction management
... autonomous transaction feature of PL/SQL. 1. The COMMIT Statement When you COMMIT, you make permanent any changes made by your session to the database in the current transaction. Once you COMMIT, your changes will be visible to other Oracle sessions or users. The syntax for the COMMIT statement is: ...
... autonomous transaction feature of PL/SQL. 1. The COMMIT Statement When you COMMIT, you make permanent any changes made by your session to the database in the current transaction. Once you COMMIT, your changes will be visible to other Oracle sessions or users. The syntax for the COMMIT statement is: ...
Databasics: An Overview of Database Use for Archivists By Daniel
... business archivist with little time or interest in developing their own databases, this can simplify the process. There will inevitably be a learning curve, but on the whole these database packages will have most of what the average archivist will need. The downside to these products is you can only ...
... business archivist with little time or interest in developing their own databases, this can simplify the process. There will inevitably be a learning curve, but on the whole these database packages will have most of what the average archivist will need. The downside to these products is you can only ...
One-Copy Serializability with Snapshot Isolation under
... With careful design and engineering, SI engines can be replicated to get even higher performance with a replicated form of SI such as Generalized Snapshot Isolation (GSI) [13], which is also not serializable. The objective of this paper is to provide a concurrency control algorithm for replicated SI ...
... With careful design and engineering, SI engines can be replicated to get even higher performance with a replicated form of SI such as Generalized Snapshot Isolation (GSI) [13], which is also not serializable. The objective of this paper is to provide a concurrency control algorithm for replicated SI ...
S1.3
... - system administration personnel who are responsible for the actual running and maintenance of the hardware and software environment for the database system. ...
... - system administration personnel who are responsible for the actual running and maintenance of the hardware and software environment for the database system. ...
UNIT
... If a participant votes to abort, then it is free to abort the transaction immediately; in fact any site is free to abort a transaction at any time up until it votes to commit. This type of abort is known as unilateral abort. 17. Give the states of the coordinator The four states of the coordinator a ...
... If a participant votes to abort, then it is free to abort the transaction immediately; in fact any site is free to abort a transaction at any time up until it votes to commit. This type of abort is known as unilateral abort. 17. Give the states of the coordinator The four states of the coordinator a ...
Recovery
... 1. Initiation of new transactions is temporarily stopped. 2. Wait until all active transactions reach their commit points or are aborted. 3. Identify all block in primary memory that have been uppdated but not rewritten to secondary memory. 4. All these blocks are written to secondary memory. 5. A c ...
... 1. Initiation of new transactions is temporarily stopped. 2. Wait until all active transactions reach their commit points or are aborted. 3. Identify all block in primary memory that have been uppdated but not rewritten to secondary memory. 4. All these blocks are written to secondary memory. 5. A c ...
Remote-Backup
... Remote Backup Systems (Cont.) Ensure durability of updates by delaying transaction commit until update is ...
... Remote Backup Systems (Cont.) Ensure durability of updates by delaying transaction commit until update is ...
Remote Backup Systems
... Remote Backup Systems (Cont.) Ensure durability of updates by delaying transaction commit until update is ...
... Remote Backup Systems (Cont.) Ensure durability of updates by delaying transaction commit until update is ...
VPN Establishment for Dhagahbour , Qorahay, and Godey city
... Disaster Prevention and Preparedness Bureau (DPPB) is a government body established to maintain and coordinate disasters such as drought and floods that recurring occurs in Somali Regional State, and also DPPB is responsible for the general management and overall coordination of the early warning di ...
... Disaster Prevention and Preparedness Bureau (DPPB) is a government body established to maintain and coordinate disasters such as drought and floods that recurring occurs in Somali Regional State, and also DPPB is responsible for the general management and overall coordination of the early warning di ...