Document
... The protocol assures serializability. It can be proved that the transactions can be serialized in the order of their lock points (i.e. the point where a transaction acquired its final lock). ...
... The protocol assures serializability. It can be proved that the transactions can be serialized in the order of their lock points (i.e. the point where a transaction acquired its final lock). ...
- Cedric
... The difference between a published XML schema and a PDV is subtle. On the one hand, even if not mandatory, a PDV may discard useless nodes in the XML schema, by removing sub-trees or by replacing a path between two nodes by a single “//” edge. Removing nodes helps improving schema management, storag ...
... The difference between a published XML schema and a PDV is subtle. On the one hand, even if not mandatory, a PDV may discard useless nodes in the XML schema, by removing sub-trees or by replacing a path between two nodes by a single “//” edge. Removing nodes helps improving schema management, storag ...
Database Buffer Cache
... To provide read consistency, which means that each user can get a consistent view of data, even while other uncommitted changes may be occurring against the data. For example, if a user issues a query at 10:00 a.m. and the query runs for 15 minutes, then the query results should reflect the entire s ...
... To provide read consistency, which means that each user can get a consistent view of data, even while other uncommitted changes may be occurring against the data. For example, if a user issues a query at 10:00 a.m. and the query runs for 15 minutes, then the query results should reflect the entire s ...
Query From Examples: An Iterative, Data-Driven
... target queries (via a database-result pair) as well as a loweffort mode of user interaction (via feedback on modified database-result pairs). Second, we demonstrate the effectiveness and efficiency of our approach using real datasets from SQLShare [11], a cloud-based platform designed to help scient ...
... target queries (via a database-result pair) as well as a loweffort mode of user interaction (via feedback on modified database-result pairs). Second, we demonstrate the effectiveness and efficiency of our approach using real datasets from SQLShare [11], a cloud-based platform designed to help scient ...
A gentle introduction to Xcerpt, a rule-based query and transformation language for XML
... The intertwining of construct and query parts as with XQuery can be found in dynamic HTML documents that contain (ECMAScript, Java Applets or Servlet) programs: The HTML page specifies a construction pattern, the programs corresponds to queries. The intertwining of construct and query parts has some ...
... The intertwining of construct and query parts as with XQuery can be found in dynamic HTML documents that contain (ECMAScript, Java Applets or Servlet) programs: The HTML page specifies a construction pattern, the programs corresponds to queries. The intertwining of construct and query parts has some ...
A Practical Theory of Language-Integrated Query
... Links can in fact be achieved in LINQ, and we are pleased to offer P-LINQ as a widely-available alternative. Through a series of examples, we show how our technique supports join queries, abstraction over values and predicates, composition of queries, dynamic generation of queries, and queries cont ...
... Links can in fact be achieved in LINQ, and we are pleased to offer P-LINQ as a widely-available alternative. Through a series of examples, we show how our technique supports join queries, abstraction over values and predicates, composition of queries, dynamic generation of queries, and queries cont ...
RIPE Database Terms and Conditions
... parties interested in wide area IP networks in Europe and beyond. The objective of RIPE is to ensure the administrative and technical coordination necessary to enable the operation of a pan-European IP network. Update – submitting information for entry into or removal from the RIPE Database Query – ...
... parties interested in wide area IP networks in Europe and beyond. The objective of RIPE is to ensure the administrative and technical coordination necessary to enable the operation of a pan-European IP network. Update – submitting information for entry into or removal from the RIPE Database Query – ...
2_Managing external data_2
... - impedance mismatch • SQL is a powerful, set-oriented, declarative language • SQL queries return sets of rows • host languages cannot handle large sets of structured data • cursors resolve the mismatch: • Demo ...
... - impedance mismatch • SQL is a powerful, set-oriented, declarative language • SQL queries return sets of rows • host languages cannot handle large sets of structured data • cursors resolve the mismatch: • Demo ...
ppt
... Observe that type (domain) of each field is specified, and enforced by DBMS whenever tuples are added or modified. ...
... Observe that type (domain) of each field is specified, and enforced by DBMS whenever tuples are added or modified. ...
Building and Configuring Slony
... In other replication solutions, this roll forward of the new master is not possible. In those solutions, when promoting a replica to master, any other replicas that exist must rebuild from scratch in order to synchronize with the new master correctly. A failover of a 1TB database leaves the new mast ...
... In other replication solutions, this roll forward of the new master is not possible. In those solutions, when promoting a replica to master, any other replicas that exist must rebuild from scratch in order to synchronize with the new master correctly. A failover of a 1TB database leaves the new mast ...
JDBC API Polyhedra Ltd
... The JDBC permits SQL queries to be passed direct to the RTRDB with no pre-processing by the driver. This allows the application to use the required amount of SQL functionality to satisfy the query. The JDBC also allows standard ODBC style escape clauses. The escape syntax provides a standard JDBC sy ...
... The JDBC permits SQL queries to be passed direct to the RTRDB with no pre-processing by the driver. This allows the application to use the required amount of SQL functionality to satisfy the query. The JDBC also allows standard ODBC style escape clauses. The escape syntax provides a standard JDBC sy ...
Database Application Schema Forensics
... one could assemble a test configuration of the DBMS in the laboratory and observe behaviour. How and why one would choose a specific version of a layer will be considered in more detail below. In previous work we have also shown that it is indeed possible to split a popular ‘real’ DBMS into these fo ...
... one could assemble a test configuration of the DBMS in the laboratory and observe behaviour. How and why one would choose a specific version of a layer will be considered in more detail below. In previous work we have also shown that it is indeed possible to split a popular ‘real’ DBMS into these fo ...
X-2E Modernize - Fresche Legacy
... As a leading expert in legacy management and modernization, Fresche Legacy helps enterprise organizations transform their business to improve financial performance, increase market competitiveness, remove risk and add business value. Our team of experts has successfully completed hundreds of transfo ...
... As a leading expert in legacy management and modernization, Fresche Legacy helps enterprise organizations transform their business to improve financial performance, increase market competitiveness, remove risk and add business value. Our team of experts has successfully completed hundreds of transfo ...
Elmasri/Navathe, Fundamentals of Database Systems, Fourth Edition
... Using a dbms to store the documents as text: We can use a relational or object dbms to store whole XML documents as text fields within the dbms records or objects. This aproach can be used if the dbms has a special module for document processing, and would work for storing schemaless and document-ce ...
... Using a dbms to store the documents as text: We can use a relational or object dbms to store whole XML documents as text fields within the dbms records or objects. This aproach can be used if the dbms has a special module for document processing, and would work for storing schemaless and document-ce ...
Sites
... If none of the above cases holds, then all active sites must have a record in their logs, but no additional control records (such
as of ). In this case active sites must wait for Ci
to recover, to find decision.
...
... If none of the above cases holds, then all active sites must have a
Semantic Web Architecture and Applications
... false negatives; b) misunderstanding the context (does “I like java” mean an island in Indonesia, a computer programming language or coffee?) Without understanding the broader context, a linguistic tool only has a dictionary definition of “Java” and does not know which “Java” is relevant or what oth ...
... false negatives; b) misunderstanding the context (does “I like java” mean an island in Indonesia, a computer programming language or coffee?) Without understanding the broader context, a linguistic tool only has a dictionary definition of “Java” and does not know which “Java” is relevant or what oth ...
Distributed Databases
... If none of the above cases holds, then all active sites must have a record in their logs, but no additional control records (such
as of ). In this case active sites must wait for
Ci to recover, to find decision.
...
... If none of the above cases holds, then all active sites must have a
Chapter 19: Distributed Databases
... If none of the above cases holds, then all active sites must have a record in their logs, but no additional control records (such
as of ). In this case active sites must wait for
Ci to recover, to find decision.
...
... If none of the above cases holds, then all active sites must have a
DataGuard SwitchOver steps
... The following query at the Primary verifies that recovery is running with “REAL TIME APPLY” option. In the example below, LOG_ARCHIVE_DEST_2 is established to ship redo to the target standby (dest_id=2): SQL> SELECT RECOVERY_MODE FROM V$ARCHIVE_DEST_STATUS WHERE DEST_ID=2; ...
... The following query at the Primary verifies that recovery is running with “REAL TIME APPLY” option. In the example below, LOG_ARCHIVE_DEST_2 is established to ship redo to the target standby (dest_id=2): SQL> SELECT RECOVERY_MODE FROM V$ARCHIVE_DEST_STATUS WHERE DEST_ID=2; ...
Best Practices for Conflict Detection and Resolution in
... enable continuous operations for not only unplanned interruptions but also planned outages such as migrations, upgrades, and systems maintenance. In most cases, active-active replication configurations are considered to be part of a continuous availability—not a disaster recovery—plan. At the high e ...
... enable continuous operations for not only unplanned interruptions but also planned outages such as migrations, upgrades, and systems maintenance. In most cases, active-active replication configurations are considered to be part of a continuous availability—not a disaster recovery—plan. At the high e ...
ppt
... update account set balance = balance - 1000 where number = 2; update account set balance = balance + 1000 where number = 1; select balance from account where number = 2; # select tells us that account #2 has a negative balance! ...
... update account set balance = balance - 1000 where number = 2; update account set balance = balance + 1000 where number = 1; select balance from account where number = 2; # select tells us that account #2 has a negative balance! ...
ppt
... Attributes of relations are listed vertically, one below the other, instead of horizontally Instead of using variables, lines (links) between attributes are used to specify that their values should be the same. Links are added automatically on the basis of attribute name, ...
... Attributes of relations are listed vertically, one below the other, instead of horizontally Instead of using variables, lines (links) between attributes are used to specify that their values should be the same. Links are added automatically on the basis of attribute name, ...
Versant Object Database
Versant Object Database (VOD) is an object database software product developed by Versant Corporation.The Versant Object Database enables developers using object oriented languages to transactionally store their information by allowing the respective language to act as the Data Definition Language (DDL) for the database. In other words, the memory model is the database schema model.In general, persistence in VOD in implemented by declaring a list of classes, then providing a transaction demarcation application programming interface to use cases. Respective language integrations adhere to the constructs of that language, including syntactic and directive sugars.Additional APIs exist, beyond simple transaction demarcation, providing for the more advanced capabilities necessary to address practical issues found when dealing with performance optimization and scalability for systems with large amounts of data, many concurrent users, network latency, disk bottlenecks, etc.