Backing up of Database using RMAN on ORACLE
... day, 7 days a week, or have become so large that a cold backup would take too long, Oracle provides for online (hot) backups to be made while the database is open and being used. To perform a hot backup, the database must be in ARCHIVELOG mode. Unlike a cold backup, in which the whole database is us ...
... day, 7 days a week, or have become so large that a cold backup would take too long, Oracle provides for online (hot) backups to be made while the database is open and being used. To perform a hot backup, the database must be in ARCHIVELOG mode. Unlike a cold backup, in which the whole database is us ...
Database System Concepts
... A transaction is a collection of operations that performs a single logical function in a database application Transaction-management component ensures that the database remains in a consistent (correct) state despite system failures (e.g., power failures and operating system crashes) and transaction ...
... A transaction is a collection of operations that performs a single logical function in a database application Transaction-management component ensures that the database remains in a consistent (correct) state despite system failures (e.g., power failures and operating system crashes) and transaction ...
Databases - JB on programming
... Isolation Levels, Read Phenomena and Locks . . . . . . . . . . . . . . . . . . . . . . . . ...
... Isolation Levels, Read Phenomena and Locks . . . . . . . . . . . . . . . . . . . . . . . . ...
transactions, database tuning, and advanced topics
... Kill-wait strategy comes in second, but is better if deadlock detection itself is expensive. Also, in interactive environments where think times are long, deadlock detection can cause excessive blocking (even in absence of deadlock, a person may be very slow). May try to optimize kill-wait as follow ...
... Kill-wait strategy comes in second, but is better if deadlock detection itself is expensive. Also, in interactive environments where think times are long, deadlock detection can cause excessive blocking (even in absence of deadlock, a person may be very slow). May try to optimize kill-wait as follow ...
Query-by-Example (QBE)
... Query By Example (GQBE) GQBE differs from QBE in the following ways ...
... Query By Example (GQBE) GQBE differs from QBE in the following ways ...
Tuning the Writes
... 1. Must force the log record for an update to disk before the corresponding data page is stolen. Guarantees Atomicity (undo) 2. Must write to disk all log records for a transaction before it commits. Guarantees Durability (undo & redo) The log is used to (a) abort transactions and (b) perform crash ...
... 1. Must force the log record for an update to disk before the corresponding data page is stolen. Guarantees Atomicity (undo) 2. Must write to disk all log records for a transaction before it commits. Guarantees Durability (undo & redo) The log is used to (a) abort transactions and (b) perform crash ...
26-Mar - University of Pennsylvania
... Means of Handling Failures There are many (especially, financial) applications where we want to create atomic operations that either commit or roll back This is one of the most basic services provided by database management systems, but we want to do it in a broader sense Part of “ACID” semant ...
... Means of Handling Failures There are many (especially, financial) applications where we want to create atomic operations that either commit or roll back This is one of the most basic services provided by database management systems, but we want to do it in a broader sense Part of “ACID” semant ...
Object operations benchmark
... disk access. We believe there is a place fbr a database system gap between these two systems, performing close to 1,000 second on typical How this ...
... disk access. We believe there is a place fbr a database system gap between these two systems, performing close to 1,000 second on typical How this ...
Using Fact-Finding Techniques
... We can interview to collect information from individuals face-to-face. There can be several objectives to using interviewing, such as finding out facts, verifying facts, clarifying facts, generating enthusiasm, getting the end-user involved, identifying requirements, and gathering ideas and opinions ...
... We can interview to collect information from individuals face-to-face. There can be several objectives to using interviewing, such as finding out facts, verifying facts, clarifying facts, generating enthusiasm, getting the end-user involved, identifying requirements, and gathering ideas and opinions ...
CORBA Services
... Corba Communication Models CORBA Services CORBA Naming Service CORBA Transaction Service CORBA Concurrency Service Copyright Karsten Schulz Terp-Nielsen ...
... Corba Communication Models CORBA Services CORBA Naming Service CORBA Transaction Service CORBA Concurrency Service Copyright Karsten Schulz Terp-Nielsen ...
File - Anuj Parashar
... gets logged, a lot of redo would be generated. TRUNCATE instead, but remember it’s a DDL and would commit your data. Let the GTT empty themselves automatically after a commit or whenever session terminates. ...
... gets logged, a lot of redo would be generated. TRUNCATE instead, but remember it’s a DDL and would commit your data. Let the GTT empty themselves automatically after a commit or whenever session terminates. ...
FAQ: MTS Databases and Transactions
... A database that provides an interface other than ODBC must do the following to support Microsoft Transaction Server: ...
... A database that provides an interface other than ODBC must do the following to support Microsoft Transaction Server: ...
Java Database
... The JDBC-to-ODBC bridge driver connects Java programs to Microsoft ODBC (Open Database Connectivity) data sources. The Java 2 Software Development Kit from Sun Microsystems, Inc. includes the JDBC-to-ODBC bridge driver (sun.jdbc.odbc.JdbcOdbcDriver). This driver typically requires the ODBC driver to ...
... The JDBC-to-ODBC bridge driver connects Java programs to Microsoft ODBC (Open Database Connectivity) data sources. The Java 2 Software Development Kit from Sun Microsystems, Inc. includes the JDBC-to-ODBC bridge driver (sun.jdbc.odbc.JdbcOdbcDriver). This driver typically requires the ODBC driver to ...
A Survey of Schema Evolution in Object
... research can be identified as requirements for database semantic integrity, schema evolvability, and application compatibility. 2.1. Semantic integrity A schema-design methodology is responsible for specifying the object semantic integrity. That is a set of constraint rules for maintaining the consi ...
... research can be identified as requirements for database semantic integrity, schema evolvability, and application compatibility. 2.1. Semantic integrity A schema-design methodology is responsible for specifying the object semantic integrity. That is a set of constraint rules for maintaining the consi ...
An Architecture for Homogenizing Federated Databases
... and current software, such as relational DBMS. The migration of legacy IS to very flexible modern computing environment is an important undertaking that we will address in this paper. One of the main difficulties in supporting global applications over a number of localized databases and migrating le ...
... and current software, such as relational DBMS. The migration of legacy IS to very flexible modern computing environment is an important undertaking that we will address in this paper. One of the main difficulties in supporting global applications over a number of localized databases and migrating le ...
Chapter 21:Application Development and Administration
... ©Silberschatz, Korth and Sudarshan See www.db-book.com for conditions on re-use ...
... ©Silberschatz, Korth and Sudarshan See www.db-book.com for conditions on re-use ...
lecture1424712798
... Inconsistency: Logical mismatch of data in files Especially caused due to changes. Atomicity: There may be partial updates in files. Data Program dependence: Changes in program structure required to incorporate new data type. Changes in file structure lead to changes in the application program struc ...
... Inconsistency: Logical mismatch of data in files Especially caused due to changes. Atomicity: There may be partial updates in files. Data Program dependence: Changes in program structure required to incorporate new data type. Changes in file structure lead to changes in the application program struc ...
Discovery and Maintenance of Functional Dependencies by Independencies
... hash-function in order to avoid redundant computations. However, he does not use a complete inference relation even regarding functional dependencies. Also do Dehaspeet al. because their inferences are based on ® subsumption. In addition, the verification is based on theorem proving which is not sui ...
... hash-function in order to avoid redundant computations. However, he does not use a complete inference relation even regarding functional dependencies. Also do Dehaspeet al. because their inferences are based on ® subsumption. In addition, the verification is based on theorem proving which is not sui ...
Database Programming Languages (DBPL-5)
... The proposed approach could be implemented simply by defining state representation in the language, primitive database operators, and state combinators to construct complex database operators. Even a very simple query, however, must be coded as a series of primitive operations in a single state-tran ...
... The proposed approach could be implemented simply by defining state representation in the language, primitive database operators, and state combinators to construct complex database operators. Even a very simple query, however, must be coded as a series of primitive operations in a single state-tran ...
The Architecture of an Active Data Base Management System
... evaluation transaction is created for each rule. For rules with the sameevent and E-C coupling mode, the condition evaluation transaction will executeconcurrently. Similarly, for rules with the sameevent and C-A coupling, the action execution transactions will execute concurrently. Thus there is no ...
... evaluation transaction is created for each rule. For rules with the sameevent and E-C coupling mode, the condition evaluation transaction will executeconcurrently. Similarly, for rules with the sameevent and C-A coupling, the action execution transactions will execute concurrently. Thus there is no ...
Chapter 1
... - The WHERE clause could specify more than one row of the table - The DROP Command - To delete whole databases or complete tables DROP (TABLE | DATABASE) [IF EXISTS] name DROP TABLE IF EXISTS States ...
... - The WHERE clause could specify more than one row of the table - The DROP Command - To delete whole databases or complete tables DROP (TABLE | DATABASE) [IF EXISTS] name DROP TABLE IF EXISTS States ...
Aggregate Queries in NoSQL Cloud Data Stores
... widespread usage of cluster and on-demand computing on the Cloud. The shift from expensive state-of-the-art machines to inexpensive commodity hardware necessitates rethinking web application models from resource provisioning to storage engines in order to allow for user base expansions and handling ...
... widespread usage of cluster and on-demand computing on the Cloud. The shift from expensive state-of-the-art machines to inexpensive commodity hardware necessitates rethinking web application models from resource provisioning to storage engines in order to allow for user base expansions and handling ...
Eloquence: HP 3000 IMAGE Migration
... Eloquence is a TurboIMAGE compatible database that runs on HP-UX, Linux and Windows.Eloquence supports all the TurboIMAGE intrinsics, almost all modes, and they behave identically. HP 3000 applications can usually be ported with no or only minor changes. Compatibility goes beyond intrinsic calls (an ...
... Eloquence is a TurboIMAGE compatible database that runs on HP-UX, Linux and Windows.Eloquence supports all the TurboIMAGE intrinsics, almost all modes, and they behave identically. HP 3000 applications can usually be ported with no or only minor changes. Compatibility goes beyond intrinsic calls (an ...
Search Engine and Metasearch Engine
... for finding the m most similar documents across multiple databases with respect to a given query for some integer m. The ranking of the databases is based on the estimated similarity of the most similar document in each database. Our experimental results indicate that on the average more than 90% o ...
... for finding the m most similar documents across multiple databases with respect to a given query for some integer m. The ranking of the databases is based on the estimated similarity of the most similar document in each database. Our experimental results indicate that on the average more than 90% o ...