Triggers
... Whenever some details for an employee are deleted or updated, both the previous and new details are recorded in an audit table to allow tracing the history of changes. An insert operation cannot be recorded with this trigger as old.empno has no value. ...
... Whenever some details for an employee are deleted or updated, both the previous and new details are recorded in an audit table to allow tracing the history of changes. An insert operation cannot be recorded with this trigger as old.empno has no value. ...
Notes
... • deduct from one account and credit to another If one steps succeeds and the other fails, database is in an inconsistent state Therefore, either both steps should succeed or neither should ...
... • deduct from one account and credit to another If one steps succeeds and the other fails, database is in an inconsistent state Therefore, either both steps should succeed or neither should ...
DEVELOPING AND ENHANCING THE METHOD OF DISTRIBUTED FIREWALLS MONITORING DATABASE IN HOME USER SYSTEM
... special collection of tables that contains information about all user-objects in the database. Our approach is mainly concentrates on data dictionary method. [10] Sybase Sybase is an enterprise software and services company offering software to manage, analyze, and mobilize information, using relati ...
... special collection of tables that contains information about all user-objects in the database. Our approach is mainly concentrates on data dictionary method. [10] Sybase Sybase is an enterprise software and services company offering software to manage, analyze, and mobilize information, using relati ...
2 The DemoGRID Project
... significantly shorten the debugging phase during the implementation due to its human readable format. Both formats have their values in certain situations, so it is better to offer them as alternatives to access the server. The multiple formats hopefully will not require the implementation of multip ...
... significantly shorten the debugging phase during the implementation due to its human readable format. Both formats have their values in certain situations, so it is better to offer them as alternatives to access the server. The multiple formats hopefully will not require the implementation of multip ...
Working with tempdb in SQL Server 2005
... Server 2005. There are new tempdb usages and internal optimizations in SQL Server 2005; tempdb architecture is mostly unchanged since SQL Server 2000. The tempdb system database is very similar to a user database. The main difference is that data in tempdb does not persist after SQL Server shuts dow ...
... Server 2005. There are new tempdb usages and internal optimizations in SQL Server 2005; tempdb architecture is mostly unchanged since SQL Server 2000. The tempdb system database is very similar to a user database. The main difference is that data in tempdb does not persist after SQL Server shuts dow ...
vSharePoint-SharePoint Performance Part 2
... drive of a front-end Web server computer. The first time that a Web page is called, these files are copied from the database to the cache on the server hard disk drive, and all subsequent requests for those files are then served from the hard disk drive cache of the server. http://technet.microsoft. ...
... drive of a front-end Web server computer. The first time that a Web page is called, these files are copied from the database to the cache on the server hard disk drive, and all subsequent requests for those files are then served from the hard disk drive cache of the server. http://technet.microsoft. ...
Slides - Zhangxi Lin - Texas Tech University
... and a destination component that bulk loads data into a SQL Server database as the last step in a data transformation process. An SSIS package can be configured to be restartable. This means you can rerun the package from a predetermined checkpoint, either a task or container in the package. The abi ...
... and a destination component that bulk loads data into a SQL Server database as the last step in a data transformation process. An SSIS package can be configured to be restartable. This means you can rerun the package from a predetermined checkpoint, either a task or container in the package. The abi ...
new-england-code-camp-16-Cloud-Architecture-Patterns-for
... • No rigid database schema • Weak support for complex joins or complex transaction • Usually optimized to Scale Out • NoSQL databases generally not managed with same tooling as for SQL databases ...
... • No rigid database schema • Weak support for complex joins or complex transaction • Usually optimized to Scale Out • NoSQL databases generally not managed with same tooling as for SQL databases ...
IMS1907 Database Systems
... The conceptual schema and external schema are typically developed iteratively until both are fully defined Logical schema is developed by transforming conceptual schema (or parts of it) to implementation model constructs Associated physical schema is specified taking into account the software, hardw ...
... The conceptual schema and external schema are typically developed iteratively until both are fully defined Logical schema is developed by transforming conceptual schema (or parts of it) to implementation model constructs Associated physical schema is specified taking into account the software, hardw ...
What will happen if we run count(*) with limit statement? It will return
... Committing a transaction means making permanent the changes performed by the SQL statements within the transaction. Before a transaction that modifies data is committed, the following has occurred: Oracle has generated undo information. The undo information contains the old data values changed by th ...
... Committing a transaction means making permanent the changes performed by the SQL statements within the transaction. Before a transaction that modifies data is committed, the following has occurred: Oracle has generated undo information. The undo information contains the old data values changed by th ...
Information Retrieval Introduction
... Doing this efficiently in current SQL engines is not easy: • “Relevance of a doc wrt a search term” is a function that is called once per doc the term appears in (docs found via inv. index): • For efficient fn computation, for each term, we can store the # times it appears in each doc, as well as th ...
... Doing this efficiently in current SQL engines is not easy: • “Relevance of a doc wrt a search term” is a function that is called once per doc the term appears in (docs found via inv. index): • For efficient fn computation, for each term, we can store the # times it appears in each doc, as well as th ...
Going Beyond Simple Information Maps to Improve Access to Data Sources
... Stored processes have one main advantage over the PROC SQL views. They can perform other manipulations to the data through the use of other SAS data steps and procedures. This enables one to add complex business logic, filtering, or calculations that may be difficult or impossible in the PROC SQL vi ...
... Stored processes have one main advantage over the PROC SQL views. They can perform other manipulations to the data through the use of other SAS data steps and procedures. This enables one to add complex business logic, filtering, or calculations that may be difficult or impossible in the PROC SQL vi ...
ActiveX Data Control
... ActiveX is build upon COM, a contract that defines a standard interface by which objects communicate. ...
... ActiveX is build upon COM, a contract that defines a standard interface by which objects communicate. ...
No Slide Title
... • Independence of the physical data storage and logical database structure. Results in users do not need to understand the underlying physical layout of the data to access data from a logical structure, such as a table • Variable and easy access to all data. Results in access to data is not predefin ...
... • Independence of the physical data storage and logical database structure. Results in users do not need to understand the underlying physical layout of the data to access data from a logical structure, such as a table • Variable and easy access to all data. Results in access to data is not predefin ...
Lab Session-II CS121 Summer-I 1999
... A DBMS (Database Management System) is implemented to retrieve information from a database in an effective and efficient way Database itself is implemented in files that contain records. Each record contains data fields having item-specific information ...
... A DBMS (Database Management System) is implemented to retrieve information from a database in an effective and efficient way Database itself is implemented in files that contain records. Each record contains data fields having item-specific information ...
Connect to the database
... MySQL is a relational database management system. A relational database stores data in separate tables rather than putting all the data in one big storeroom. This adds speed and flexibility. The tables are linked by defined relations making it possible to combine data from several tables on request ...
... MySQL is a relational database management system. A relational database stores data in separate tables rather than putting all the data in one big storeroom. This adds speed and flexibility. The tables are linked by defined relations making it possible to combine data from several tables on request ...
Interworks Cloud Platform Cloud BSS
... The Data storage location must be accessible to all Administration/BSS/Storefront Application servers and concurrent read/write access is required. This can be achieved by use of a clustered File System, or alternatively by use of a shared network folder (via UNC path). This approach would require a ...
... The Data storage location must be accessible to all Administration/BSS/Storefront Application servers and concurrent read/write access is required. This can be achieved by use of a clustered File System, or alternatively by use of a shared network folder (via UNC path). This approach would require a ...
Database Terminology Homework
... 4. Computerised Vs paper-based databases: Computerised database Can hold a vast amount of data Very fast to search for a record Can be easily amended or updated Records are stored safely ...
... 4. Computerised Vs paper-based databases: Computerised database Can hold a vast amount of data Very fast to search for a record Can be easily amended or updated Records are stored safely ...
