Proceedings of - Intelligent Systems Center
... ones, involving single nodes. In reality single transaction processing can span multiple nodes and nodes themselves may not be semantically and structurally disjoint. We consider the details of this in transaction management in the following section. 4. TRANSACTION MANAGEMENT OVER SUMMARY SCHEMA MOD ...
... ones, involving single nodes. In reality single transaction processing can span multiple nodes and nodes themselves may not be semantically and structurally disjoint. We consider the details of this in transaction management in the following section. 4. TRANSACTION MANAGEMENT OVER SUMMARY SCHEMA MOD ...
Database Administration
... DBMS –database management system designed to create, store, and manage databases, normally including a Structured Query Language (SQL) application programming interface SQL –Standard query language to access database ...
... DBMS –database management system designed to create, store, and manage databases, normally including a Structured Query Language (SQL) application programming interface SQL –Standard query language to access database ...
Progress Database and Hardware Internals
... Memory Hints(continued) Use memory for the users closest to the customer first (developers increase last) Use -Bt for large temp tables Set -bibufs between 50 and 120. Look at the activity screen in promon (BI buffer waits) to see if additional tuning is necessary. Start with 50 as this will wo ...
... Memory Hints(continued) Use memory for the users closest to the customer first (developers increase last) Use -Bt for large temp tables Set -bibufs between 50 and 120. Look at the activity screen in promon (BI buffer waits) to see if additional tuning is necessary. Start with 50 as this will wo ...
Distributed Databases
... Different columns of a table at different sites Advantages and disadvantages are the same as for horizontal partitioning except that combining data across partitions is ...
... Different columns of a table at different sites Advantages and disadvantages are the same as for horizontal partitioning except that combining data across partitions is ...
Database Management System
... Interleaving actions of different user programs can lead to inconsistency: e.g., check is cleared while account balance is being computed. DBMS ensures such problems don’t arise: users can pretend they are using a single-user system. ...
... Interleaving actions of different user programs can lead to inconsistency: e.g., check is cleared while account balance is being computed. DBMS ensures such problems don’t arise: users can pretend they are using a single-user system. ...
slides - Indico
... is that the database server address should NOT be hardwired in data processing transformations The logical-physical indirection for database servers is now introduced in ATLAS Similar to the logical-physical file Replica Location Service indirection of the Grid file catalogs Supported by ATLAS ...
... is that the database server address should NOT be hardwired in data processing transformations The logical-physical indirection for database servers is now introduced in ATLAS Similar to the logical-physical file Replica Location Service indirection of the Grid file catalogs Supported by ATLAS ...
Introduction to Database Systems
... Interleaving actions of different user programs can lead to inconsistency: e.g., check is cleared while account balance is being computed. DBMS ensures such problems don’t arise: users can pretend they are using a single-user system. ...
... Interleaving actions of different user programs can lead to inconsistency: e.g., check is cleared while account balance is being computed. DBMS ensures such problems don’t arise: users can pretend they are using a single-user system. ...
TMs and ORBs - Microsoft Research
... services to certain user groups and that protects its resources by transactions. An example of a very important resource manager is a database system. rmCall: This is used as a generic call to any kind of resource manager. The call specifies the name of the resource manager, the operation that shoul ...
... services to certain user groups and that protects its resources by transactions. An example of a very important resource manager is a database system. rmCall: This is used as a generic call to any kind of resource manager. The call specifies the name of the resource manager, the operation that shoul ...
Last Covered
... together for a process, then each atomic process operates correctly or entire combination aborts ...
... together for a process, then each atomic process operates correctly or entire combination aborts ...
How Oracle Database Manages Data Concurrency and Consistency
... both will wait if they try to change a row updated by an uncommitted concurrent transaction. The second transaction that tries to update a given row waits for the other transaction to commit or undo and release its lock. If that other transaction rolls back, the waiting transaction, regardless of it ...
... both will wait if they try to change a row updated by an uncommitted concurrent transaction. The second transaction that tries to update a given row waits for the other transaction to commit or undo and release its lock. If that other transaction rolls back, the waiting transaction, regardless of it ...
Data Models - VUB STARLab
... e.g., the database consists of information about a set of customers and accounts and the relationship between them) Analogous to type information of a variable in a program Physical schema: database design at the physical level ...
... e.g., the database consists of information about a set of customers and accounts and the relationship between them) Analogous to type information of a variable in a program Physical schema: database design at the physical level ...
Chapter 10 ASP.NET Security
... one at a time until you find the one you’re looking for, then DataReader is the right tool. DataReaders (1) retrieve only the data that you actually use, and (2) they don’t consume memory by not storing every record that you read, but (3) they can’t iterate backward. To use all the query results a ...
... one at a time until you find the one you’re looking for, then DataReader is the right tool. DataReaders (1) retrieve only the data that you actually use, and (2) they don’t consume memory by not storing every record that you read, but (3) they can’t iterate backward. To use all the query results a ...
Database_Projects2016
... A code based database definition in Visual Studio Provides a common application developer platform ...
... A code based database definition in Visual Studio Provides a common application developer platform ...
Frequent Pattern mining Using Novel FP-Growth
... Data mining or knowledge discovery is the process of analysing data from different perspectives and summarizing it into useful information [1]. Above line includes words data, knowledge and information which may sound confusing at first glance and seems to be same thing but they are different. Data ...
... Data mining or knowledge discovery is the process of analysing data from different perspectives and summarizing it into useful information [1]. Above line includes words data, knowledge and information which may sound confusing at first glance and seems to be same thing but they are different. Data ...
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New Sample Questions for CS 6371 (APL) [added 11/1/08]
... Consider an SQL like relational database programming language. Programs in this language manipulate a relational database. A relational database (RDB) stores a table (collection of tuples) for each relation name. Thus, each relation can be regarded as a collection of tuples. (12 pts) Define a semant ...
... Consider an SQL like relational database programming language. Programs in this language manipulate a relational database. A relational database (RDB) stores a table (collection of tuples) for each relation name. Thus, each relation can be regarded as a collection of tuples. (12 pts) Define a semant ...
School of Computer Science - School of Computing and Information
... o Functional dependency o Normal forms (1NF, 2NF, 3NF, BCNF) o Multivalued dependency (4NF) o Join dependency (PJNF, 5NF) Physical database design o File structures: index, hash, B-tree o Files with variable length records o Database efficiency and tuning ...
... o Functional dependency o Normal forms (1NF, 2NF, 3NF, BCNF) o Multivalued dependency (4NF) o Join dependency (PJNF, 5NF) Physical database design o File structures: index, hash, B-tree o Files with variable length records o Database efficiency and tuning ...
A Technical Overview of SQL 2005 High Availability Features
... • Database snapshots can be used to protect against application, user, or administrative error • Use the new optimistic concurrency controls and ONLINE index operations to reduce database ...
... • Database snapshots can be used to protect against application, user, or administrative error • Use the new optimistic concurrency controls and ONLINE index operations to reduce database ...
How In-Memory Affects Database Design
... • This will stop MOST duplication, but not all. Two inserters can check at the same time, and with no blocks, app locks, or constraints even available, you may get duplicates. • Remember the term: Optimistic Concurrency Control ...
... • This will stop MOST duplication, but not all. Two inserters can check at the same time, and with no blocks, app locks, or constraints even available, you may get duplicates. • Remember the term: Optimistic Concurrency Control ...
javaEE_L_004
... A single-threaded, short-lived object representing a conversation between the application and the persistent store. Wraps a JDBC connection. Factory for Transaction. Holds a mandatory (first-level) cache of persistent objects, used when navigating the object graph or looking up objects by identifier ...
... A single-threaded, short-lived object representing a conversation between the application and the persistent store. Wraps a JDBC connection. Factory for Transaction. Holds a mandatory (first-level) cache of persistent objects, used when navigating the object graph or looking up objects by identifier ...
Accessing the MySQL Database with PHP
... bad: most searches (e.g. find a student's courses) will have to rely on string comparisons bad: there is no single column whose value will be unique in each row ...
... bad: most searches (e.g. find a student's courses) will have to rely on string comparisons bad: there is no single column whose value will be unique in each row ...
Scaling Multicore Databases via Constrained Parallel Execution
... maximally take advantage of the CPU resources of multiple cores has become an important research problem. A key challenge facing multi-core databases is how to support serializable transactions while maximizing parallelism so as to scale to many CPU cores. Popular concurrency control schemes are bas ...
... maximally take advantage of the CPU resources of multiple cores has become an important research problem. A key challenge facing multi-core databases is how to support serializable transactions while maximizing parallelism so as to scale to many CPU cores. Popular concurrency control schemes are bas ...
Database Systems
... • Distributed databases make it possible for transaction to access data at several sites • Final COMMIT is issued after all sites have committed their parts of transaction • Requires that each DP’s transaction log entry be written before database fragment updated • DO-UNDO-REDO protocol with write-a ...
... • Distributed databases make it possible for transaction to access data at several sites • Final COMMIT is issued after all sites have committed their parts of transaction • Requires that each DP’s transaction log entry be written before database fragment updated • DO-UNDO-REDO protocol with write-a ...
Exam 1 key
... _C__-- There is exactly one schema at this level detailing all data attributes, their types and constraints. _P__-- The schema at this level is typically generated automatically from the conceptual schema. _E__-- A simplified view of the database is often provided at this level for the end user. _E_ ...
... _C__-- There is exactly one schema at this level detailing all data attributes, their types and constraints. _P__-- The schema at this level is typically generated automatically from the conceptual schema. _E__-- A simplified view of the database is often provided at this level for the end user. _E_ ...