BCS THE CHARTERED INSTITUTE FOR IT BCS HIGHER EDUCATION QUALIFICATIONS
... Cascaded rollback - when transaction T1 fails and induces a rollback which in turn causes other transactions - which were dependent on the success of T1 – to likewise fail and be rolled back. Optimistic locking – based on the assumption that inter-transaction conflict is rare so individual transacti ...
... Cascaded rollback - when transaction T1 fails and induces a rollback which in turn causes other transactions - which were dependent on the success of T1 – to likewise fail and be rolled back. Optimistic locking – based on the assumption that inter-transaction conflict is rare so individual transacti ...
Business Intelligence for IT Professionals in Microsoft Dynamics
... Provide insight into the online analytical processing technology Become acquainted with the business intelligence terminology Define requirements and preconditions for the installation of Business Analytics for Microsoft Dynamics NAV 2009 Install and set up the Business Analytics Basic for M ...
... Provide insight into the online analytical processing technology Become acquainted with the business intelligence terminology Define requirements and preconditions for the installation of Business Analytics for Microsoft Dynamics NAV 2009 Install and set up the Business Analytics Basic for M ...
Top Ten Benchmarking Misconceptions
... and all the necessary tools. Yet when I visit customers having database benchmarking difficulties, almost invariably the problem lies there. If one has never read the “TPC-C” benchmark specification, why would one then assume that they can successfully perform said benchmark? That would be like one ...
... and all the necessary tools. Yet when I visit customers having database benchmarking difficulties, almost invariably the problem lies there. If one has never read the “TPC-C” benchmark specification, why would one then assume that they can successfully perform said benchmark? That would be like one ...
Chapter 14
... Deletion problem. Deleting Vincent as a customer will cause the deletion of four records. These four records hold vital information about four orders and four items. Update problem. To update Vincent’s customer address, four records would need to be updated. Insertion problem. To identify a unique r ...
... Deletion problem. Deleting Vincent as a customer will cause the deletion of four records. These four records hold vital information about four orders and four items. Update problem. To update Vincent’s customer address, four records would need to be updated. Insertion problem. To identify a unique r ...
Introduction of Week 2
... sections (partitions) stored in multiple files Raw versus file systems – OS-controlled file or not Clustering – enforcing the physical sequence of data on disk Free space and compression – storage management File placement and allocation Page size (block size in Oracle) – using the proper ...
... sections (partitions) stored in multiple files Raw versus file systems – OS-controlled file or not Clustering – enforcing the physical sequence of data on disk Free space and compression – storage management File placement and allocation Page size (block size in Oracle) – using the proper ...
Application Framework Guidelines
... receivable. This is where we validate that the debtor id passed to the CreateReceivable method actually exists. Data Access - The ReceivableTbl object is where all of the functions that allow for the selecting, inserting, updating and deleting of data are defined Common Data - The ReceivableData obj ...
... receivable. This is where we validate that the debtor id passed to the CreateReceivable method actually exists. Data Access - The ReceivableTbl object is where all of the functions that allow for the selecting, inserting, updating and deleting of data are defined Common Data - The ReceivableData obj ...
From File Systems to Databases Importance of DBMS
... can perform only a fixed number of joins of manager with itself This can give only a fixed number of levels of managers Given a program we can construct a database with a greater number of levels of managers on which the program will not work ...
... can perform only a fixed number of joins of manager with itself This can give only a fixed number of levels of managers Given a program we can construct a database with a greater number of levels of managers on which the program will not work ...
Spring 2012 Professor Emile Chungtien Chi
... You need to download the MySQL Community Server and the MySQL Workbench. Many versions are available at this site. Use whichever one you are able to install on your own computer. Setup of MySQL is not difficult and will be demonstrated at the first f2f class. My instructions for the Windows setup ar ...
... You need to download the MySQL Community Server and the MySQL Workbench. Many versions are available at this site. Use whichever one you are able to install on your own computer. Setup of MySQL is not difficult and will be demonstrated at the first f2f class. My instructions for the Windows setup ar ...
Transaction Management Overview
... If a transaction Ti is aborted, all its actions have to be undone. Not only that, if Tj reads an object last written by Ti, Tj must be aborted as well! Most systems avoid such cascading aborts by releasing a transaction’s locks only at commit time. ...
... If a transaction Ti is aborted, all its actions have to be undone. Not only that, if Tj reads an object last written by Ti, Tj must be aborted as well! Most systems avoid such cascading aborts by releasing a transaction’s locks only at commit time. ...
Physical Database Design and Performance
... 4. Fields in SQL ORDER BY and GROUP BY commands 5. When there are >100 values but not when there are <30 values ...
... 4. Fields in SQL ORDER BY and GROUP BY commands 5. When there are >100 values but not when there are <30 values ...
Pclec01
... The Many Faces of Database Client/server systems also differ in the way in which they handle competing transactions. A system of locking is normally applied which forces transaction other than the one current to wait until the lock is unset. A personal database uses optimistic locking - there is th ...
... The Many Faces of Database Client/server systems also differ in the way in which they handle competing transactions. A system of locking is normally applied which forces transaction other than the one current to wait until the lock is unset. A personal database uses optimistic locking - there is th ...
DBMaker Overview We can help you change your software for the
... handled by these applications is often stored using the traditional COBOL B-tree filing technique. This method is very suitable for repeated high speed access to the same data sets. However, many types of analysis and decision support require broad access to a wide variety of data and flexible query ...
... handled by these applications is often stored using the traditional COBOL B-tree filing technique. This method is very suitable for repeated high speed access to the same data sets. However, many types of analysis and decision support require broad access to a wide variety of data and flexible query ...
Implementing a Categorical Information System
... of an EA sketch. Thus its powerful constraint definition facility is available to users via a simply understood graphical data model design tool. EASIK is the first system to do this. Furthermore EASIK will support the development of large systems using the SkDM approach. Such software support is vita ...
... of an EA sketch. Thus its powerful constraint definition facility is available to users via a simply understood graphical data model design tool. EASIK is the first system to do this. Furthermore EASIK will support the development of large systems using the SkDM approach. Such software support is vita ...
Introduction of Week 2
... Alter database parameters that can not be easily performed with ALTER statement Modify database structures with cascading effects Change a column’s data type and length Remove columns from a table Batch requested changes into a work list that can be executing in the foreground or the backg ...
... Alter database parameters that can not be easily performed with ALTER statement Modify database structures with cascading effects Change a column’s data type and length Remove columns from a table Batch requested changes into a work list that can be executing in the foreground or the backg ...
Database Management System
... Users can specify some simple integrity constraints on the data, and the DBMS will enforce these constraints. Beyond this, the DBMS does not really understand the semantics of the data. (e.g., it does not understand how the interest on a bank account is computed). Thus, ensuring that a transaction ( ...
... Users can specify some simple integrity constraints on the data, and the DBMS will enforce these constraints. Beyond this, the DBMS does not really understand the semantics of the data. (e.g., it does not understand how the interest on a bank account is computed). Thus, ensuring that a transaction ( ...
hibernate
... with the database. Persistent objects are saved and retrieved through a Session object. – The session objects should not be kept open for a long time because they are not usually thread safe and they should be created and destroyed as needed. Transaction Object: – A Transaction represents a unit of ...
... with the database. Persistent objects are saved and retrieved through a Session object. – The session objects should not be kept open for a long time because they are not usually thread safe and they should be created and destroyed as needed. Transaction Object: – A Transaction represents a unit of ...
![[Demo] - SQL_Server_Security](http://s1.studyres.com/store/data/000668879_1-f3e912871c13d5550deb22832853c294-300x300.png)
[Demo] - SQL_Server_Security
... • System Administrator (sa) Login SQL Server 2000 • New Information - SQL Server 2000 SP3. • System administrator (sa) is a special login provided for backward compatibility. By default, it is assigned to the sysadmin fixed server role and cannot be changed. Although sa is a built-in administrator ...
... • System Administrator (sa) Login SQL Server 2000 • New Information - SQL Server 2000 SP3. • System administrator (sa) is a special login provided for backward compatibility. By default, it is assigned to the sysadmin fixed server role and cannot be changed. Although sa is a built-in administrator ...
EPICS V4 Expands Support to Physics Application, Data Acquisition
... e.g. any data being compressed from its original rate – fast sampling in hardware to EPICS DB, new function on any database waveform, response from a request to an archive server ...
... e.g. any data being compressed from its original rate – fast sampling in hardware to EPICS DB, new function on any database waveform, response from a request to an archive server ...
Data Access Object Pattern
... data access object can be easily be replaced with an object for a different data source. The data source is the actual data source. In most cases this is some kind of relational database accessed via SQL. It may also be a flat file or an object-oriented database, whatever is available on the deploy ...
... data access object can be easily be replaced with an object for a different data source. The data source is the actual data source. In most cases this is some kind of relational database accessed via SQL. It may also be a flat file or an object-oriented database, whatever is available on the deploy ...
Microsoft Jet Database Engine
The Microsoft Jet Database Engine is a database engine on which several Microsoft products have been built. A database engine is the underlying component of a database, a collection of information stored on a computer in a systematic way. The first version of Jet was developed in 1992, consisting of three modules which could be used to manipulate a database.Database connect for MicrosoftJET stands for Joint Engine Technology, sometimes being referred to as Microsoft JET Engine or simply Jet. Microsoft Access and Visual Basic use or have used Jet as their underlying database engine. It has since been superseded for general use, however, first by Microsoft Desktop Engine (MSDE), then later by SQL Server Express. For larger database needs, Jet databases can be upgraded (or, in Microsoft parlance, ""up-sized"") to Microsoft's flagship database product, SQL Server.However, this does not mean that a MS Jet (Red) database cannot match MS SQL Server in storage capacity. A 5 billion record MS Jet (Red) database with compression and encryption turned on requires about 1 terabyte of disk storage space, comprising hundreds of (*.mdb) files, each acting as partial table, and not as a database in itself.Over the years, Jet has become almost synonymous with Microsoft Access, to the extent that many people refer to a Jet database as an ""Access database"".