An Architecture for Automatic Relational Database System Conversion
... enormous challenge of database system conversion. The new requirements may call for a simple addition/deletion of a relation or attribute or for a total restructuring of the logical relationships. Simple additions or deletions present a minor problem which can be handled easily, while a total restru ...
... enormous challenge of database system conversion. The new requirements may call for a simple addition/deletion of a relation or attribute or for a total restructuring of the logical relationships. Simple additions or deletions present a minor problem which can be handled easily, while a total restru ...
Lecture 6: Query optimization, query tuning
... • If the DBMS does not consider a nearoptimal plan, it is likely that this is because of bad cost estimates. • The tuner can influence cost estimates and access plans, but not the optimization method. • We refer to RG for more details. Database Tuning, Spring 2008 ...
... • If the DBMS does not consider a nearoptimal plan, it is likely that this is because of bad cost estimates. • The tuner can influence cost estimates and access plans, but not the optimization method. • We refer to RG for more details. Database Tuning, Spring 2008 ...
IC Database Configuration and Maintenance for SQL Server
... This product includes software licensed under the Common Development and Distribution License (6/24/2009). We hereby agree to indemnify the Initial Developer and every Contributor of the software licensed under the Common Development and Distribution License (6/24/2009) for any liability incurred by ...
... This product includes software licensed under the Common Development and Distribution License (6/24/2009). We hereby agree to indemnify the Initial Developer and every Contributor of the software licensed under the Common Development and Distribution License (6/24/2009) for any liability incurred by ...
JPA - KSU Web Home
... setter methods when persisting the object to the database. If persistent fields are used then it will access the fields directly. An entity class may use either persistent fields or properties, but cannot mix the two in the same class (or class hierarchy if there is any inheritance is involved). It ...
... setter methods when persisting the object to the database. If persistent fields are used then it will access the fields directly. An entity class may use either persistent fields or properties, but cannot mix the two in the same class (or class hierarchy if there is any inheritance is involved). It ...
Slides for Ch-13
... for each tuple tr in r do begin for each tuple ts in s do begin test pair (tr,ts) to see if they satisfy the join condition if they do, add tr • ts to the result. ...
... for each tuple tr in r do begin for each tuple ts in s do begin test pair (tr,ts) to see if they satisfy the join condition if they do, add tr • ts to the result. ...
Preview Sample 1
... the faulty database from costing consumers billions of dollars? How would you clean up the Ingenix database? Students’ response may differ. However, their response should include: data inconsistency and duplication as well as dirty data are the major cause of faulty data. To remove data inconsistenc ...
... the faulty database from costing consumers billions of dollars? How would you clean up the Ingenix database? Students’ response may differ. However, their response should include: data inconsistency and duplication as well as dirty data are the major cause of faulty data. To remove data inconsistenc ...
viva voce questions
... Ans.A deadlock is a situation that can occur in multi-user systems that prevents some transactions from continuing work. A deadlock can occur when two or more users are waiting for data locked by each other. 56. What is two phase commit? Ans.Prepare phase and commit phase. The prepare/commit mechani ...
... Ans.A deadlock is a situation that can occur in multi-user systems that prevents some transactions from continuing work. A deadlock can occur when two or more users are waiting for data locked by each other. 56. What is two phase commit? Ans.Prepare phase and commit phase. The prepare/commit mechani ...
notes #13
... • With CASCADE, all related dependent objects are deleted; i.e. any views defined on view being dropped. • With RESTRICT (default), if any other objects depend for their existence on continued existence of view being dropped, command is rejected. ...
... • With CASCADE, all related dependent objects are deleted; i.e. any views defined on view being dropped. • With RESTRICT (default), if any other objects depend for their existence on continued existence of view being dropped, command is rejected. ...
A Critical Comparison of NOSQL Databases in the Context of Acid
... transaction(s), a transaction has to wait for other to finish in order for it to start. Durability means that effects of a completed transaction are permanent in the event of a later system failure. NOSQL: NOSQL systems are mostly non-relational database systems that are distributed and are underst ...
... transaction(s), a transaction has to wait for other to finish in order for it to start. Durability means that effects of a completed transaction are permanent in the event of a later system failure. NOSQL: NOSQL systems are mostly non-relational database systems that are distributed and are underst ...
Keed Admin Course
... • Used to authenticate sysdba & sysoper users when database is not running • Is created with Oracle utility $ORACLE_HOME/bin/orapwd • Can be shared among databases on same server or can be dedicated to single database on server (recommended) • Parameter REMOTE_LOGIN_PASSWORDFILE is used to configure ...
... • Used to authenticate sysdba & sysoper users when database is not running • Is created with Oracle utility $ORACLE_HOME/bin/orapwd • Can be shared among databases on same server or can be dedicated to single database on server (recommended) • Parameter REMOTE_LOGIN_PASSWORDFILE is used to configure ...
A metadata driven approach to performing complex heterogeneous
... database before the software, whereas the Reverse Migration Method migrates the software application first and the database migration last. Meier [3] categorizes database migration strategies into three main areas: data and code conversion, language transformation and data propagation. This work con ...
... database before the software, whereas the Reverse Migration Method migrates the software application first and the database migration last. Meier [3] categorizes database migration strategies into three main areas: data and code conversion, language transformation and data propagation. This work con ...
Chapter 19: Distributed Databases
... a transaction which executes at multiple sites must either be committed at all the sites, or aborted at all the sites. ...
... a transaction which executes at multiple sites must either be committed at all the sites, or aborted at all the sites. ...
Bad Things Happen to Good People: How to Minimize the Pain
... You can recover a dropped table by doing the following: 1. Identify the dropped table by invoking the LIST HISTORY DROPPED TABLE command 2. Restore a database- or table space-level backup image taken before the table ...
... You can recover a dropped table by doing the following: 1. Identify the dropped table by invoking the LIST HISTORY DROPPED TABLE command 2. Restore a database- or table space-level backup image taken before the table ...
XBiT: An XML-based Bitemporal Data Model
... and querying of temporal information. Given the remarkable research efforts that have been spent on these problems [2], the lack of viable solutions must be attributed, at least in part, to the technical difficulties of introducing temporal extensions into the relational data model and query languag ...
... and querying of temporal information. Given the remarkable research efforts that have been spent on these problems [2], the lack of viable solutions must be attributed, at least in part, to the technical difficulties of introducing temporal extensions into the relational data model and query languag ...
Fund Finder Wrapper: A case study of database-to-ontology mapping
... solution domain independent and reusable. The level of complexity of the mappings to be defined will depend on the level of similarity of the ontology’s conceptual model and the E/R model underlying the database. Normally, one of them will be richer, more generic or specific, better structured, etc. ...
... solution domain independent and reusable. The level of complexity of the mappings to be defined will depend on the level of similarity of the ontology’s conceptual model and the E/R model underlying the database. Normally, one of them will be richer, more generic or specific, better structured, etc. ...
Chapter 1
... deletions - A relational database is a collection of tables of data, each of which has one special column that stores the primary keys of the table - Rows are sometimes called entities - Designing a relational database for used Corvettes that are for sale ...
... deletions - A relational database is a collection of tables of data, each of which has one special column that stores the primary keys of the table - Rows are sometimes called entities - Designing a relational database for used Corvettes that are for sale ...
Press Release
... “As a new application with no legacy code, Reference Linking offered us a good opportunity to introduce Oracle Database 11g into our environment,” said Mark Bobak, Senior Database Administrator, System & Product Technologies, ProQuest. “The testing and implementation of Reference Linking on Oracle D ...
... “As a new application with no legacy code, Reference Linking offered us a good opportunity to introduce Oracle Database 11g into our environment,” said Mark Bobak, Senior Database Administrator, System & Product Technologies, ProQuest. “The testing and implementation of Reference Linking on Oracle D ...
Accelerate EDB Postgres Advanced Server
... Ever-increasing demands of database implementations for faster transaction processing speeds, scalable capacity, and increased flexibility are essential to meet the needs of today’s business challenges. At the same time, enterprises are looking for cost-effective, open-architecture, industry-standar ...
... Ever-increasing demands of database implementations for faster transaction processing speeds, scalable capacity, and increased flexibility are essential to meet the needs of today’s business challenges. At the same time, enterprises are looking for cost-effective, open-architecture, industry-standar ...
Backup and Recovery
... • Backup to disk is much faster than backup to tape – However, if you need to retain backups for a number of years, using tape backups is much easier – Typically, many database installations will use a combination of both disk and tape backup storage • Recent backups will be stored on disk, allowing ...
... • Backup to disk is much faster than backup to tape – However, if you need to retain backups for a number of years, using tape backups is much easier – Typically, many database installations will use a combination of both disk and tape backup storage • Recent backups will be stored on disk, allowing ...
Chapter 15 - Amazon Web Services
... • Backup to disk is much faster than backup to tape – However, if you need to retain backups for a number of years, using tape backups is much easier – Typically, many database installations will use a combination of both disk and tape backup storage • Recent backups will be stored on disk, allowing ...
... • Backup to disk is much faster than backup to tape – However, if you need to retain backups for a number of years, using tape backups is much easier – Typically, many database installations will use a combination of both disk and tape backup storage • Recent backups will be stored on disk, allowing ...
Manipulating Data
... flexibility and control when changing data, and they ensure data consistency in the event of user process failure or system failure. Transactions consist of DML statements that make up one consistent change to the data. For example, a transfer of funds between two accounts should include the debit t ...
... flexibility and control when changing data, and they ensure data consistency in the event of user process failure or system failure. Transactions consist of DML statements that make up one consistent change to the data. For example, a transfer of funds between two accounts should include the debit t ...
Practice 3: Managing an Oracle Instance - MCST-CS
... 6 Try to change the database block size. What happened? Hint: There is no hint for this question. 7 List the default initialization parameter. Hint: Query the dynamic performance views V$PARAMETER to display the default initialization parameter. 8 Open the database in read only mode. Connect as user ...
... 6 Try to change the database block size. What happened? Hint: There is no hint for this question. 7 List the default initialization parameter. Hint: Query the dynamic performance views V$PARAMETER to display the default initialization parameter. 8 Open the database in read only mode. Connect as user ...
Press Release
... Today, Oracle announced the availability of Oracle® TimesTen In-Memory Database 11g and Oracle In-Memory Database Cache 11g, the database caching option for Oracle Database 11g. This latest release features major enhancements including performance and scale-out through the Database Cache Grid; suppo ...
... Today, Oracle announced the availability of Oracle® TimesTen In-Memory Database 11g and Oracle In-Memory Database Cache 11g, the database caching option for Oracle Database 11g. This latest release features major enhancements including performance and scale-out through the Database Cache Grid; suppo ...
Chapter 7: Database Applications and Privacy
... Data mining is: A. the discovery of queried information from large database. B. the discovery and extraction of hidden predictive information from large databases. C. only accessible and available on mainframe computers. D. when a user creates a database that can be accessed and used by other users. ...
... Data mining is: A. the discovery of queried information from large database. B. the discovery and extraction of hidden predictive information from large databases. C. only accessible and available on mainframe computers. D. when a user creates a database that can be accessed and used by other users. ...