Normalization
... of normalization is to ensure that all tables are in at least 3NF Higher forms are not likely to be encountered in business environment Normalization works one relation at a time Progressively breaks table into new set of relations based on identified dependencies Database Systems, 9th Edition ...
... of normalization is to ensure that all tables are in at least 3NF Higher forms are not likely to be encountered in business environment Normalization works one relation at a time Progressively breaks table into new set of relations based on identified dependencies Database Systems, 9th Edition ...
Slide 5-9
... • Need to Update all Nulls with Actual Values • What if DB is Large? • Potential to Introduce Data Inconsistencies ...
... • Need to Update all Nulls with Actual Values • What if DB is Large? • Potential to Introduce Data Inconsistencies ...
Chapter 8 - cda college
... • Batch update routine pools multiple transactions into a single batch – Update master table field in a single operation ...
... • Batch update routine pools multiple transactions into a single batch – Update master table field in a single operation ...
Database System Concepts, 6 th Ed
... SQL:1999 allows more than one function/procedure of the same name (called name overloading), as long as the number of arguments differ, or at least the types of the arguments differ Database System Concepts - 6th Edition ...
... SQL:1999 allows more than one function/procedure of the same name (called name overloading), as long as the number of arguments differ, or at least the types of the arguments differ Database System Concepts - 6th Edition ...
Data Access Using Active Server Page (ASP)
... the web pages. – Adding database functionality to web application ...
... the web pages. – Adding database functionality to web application ...
Chapter 8
... • Updatable view is a view that can be used to update attributes in the base tables • Not all views are updatable – GROUP BY expressions or aggregate functions cannot be used – Cannot use set operators – Most restrictions are based on use of JOINs Database Systems, 10th Edition ...
... • Updatable view is a view that can be used to update attributes in the base tables • Not all views are updatable – GROUP BY expressions or aggregate functions cannot be used – Cannot use set operators – Most restrictions are based on use of JOINs Database Systems, 10th Edition ...
Transactions
... each pair of transactions Ti and Tj such that Tj reads a data item previously written by Ti, the commit operation of Ti appears before the read operation of Tj. Every cascadeless schedule is also recoverable It is desirable to restrict the schedules to those that are cascadeless ...
... each pair of transactions Ti and Tj such that Tj reads a data item previously written by Ti, the commit operation of Ti appears before the read operation of Tj. Every cascadeless schedule is also recoverable It is desirable to restrict the schedules to those that are cascadeless ...
Creating a target user and module
... using cubes and dimensions in a dimensional design. It also has the ability to implement them physically in the underlying database as either a relational structure or a dimensional structure simply by checking a box. In general, which option should be chosen? The relational implementation is best s ...
... using cubes and dimensions in a dimensional design. It also has the ability to implement them physically in the underlying database as either a relational structure or a dimensional structure simply by checking a box. In general, which option should be chosen? The relational implementation is best s ...
Week 8 - Seattle Colleges
... The SQL standard provides a Module Language for interface to other languages. Each SQL statement may be packaged as a procedure that can be called and have parameters passed to it from an external language. A cursor mechanism provides row-at-a-time access from languages that can only handle one row ...
... The SQL standard provides a Module Language for interface to other languages. Each SQL statement may be packaged as a procedure that can be called and have parameters passed to it from an external language. A cursor mechanism provides row-at-a-time access from languages that can only handle one row ...
name varchar
... They have an implicit first parameter called self which is set to the structured-type value on which the method is invoked The method code can refer to attributes of the structured-type value using the self variable E.g. ...
... They have an implicit first parameter called self which is set to the structured-type value on which the method is invoked The method code can refer to attributes of the structured-type value using the self variable E.g. ...
The Database Environment
... Small DBMSs typically focus on form-based interfaces; enterpriselevel products begin with a command-line interface. The most commonly used language for interacting with a relational database (the type we are discussing in this book) is SQL (originally called Structured Query Language), which has bee ...
... Small DBMSs typically focus on form-based interfaces; enterpriselevel products begin with a command-line interface. The most commonly used language for interacting with a relational database (the type we are discussing in this book) is SQL (originally called Structured Query Language), which has bee ...
DBMS_Introduction
... It refers to the ability to modify the scheme followed at the physical level without affecting the scheme followed at the conceptual level. The application programs remain the same even though the scheme at the physical level gets modified. Modifications at the physical level are occasionally necess ...
... It refers to the ability to modify the scheme followed at the physical level without affecting the scheme followed at the conceptual level. The application programs remain the same even though the scheme at the physical level gets modified. Modifications at the physical level are occasionally necess ...
BWDB2UG March 8 2017 DB2 11 and 12 Performance and Availability
... With every new release of DB2 we look to see what features will allow us to improve the capabilities and performance of our existing applications as well as the availability of our data. We also have to plan to utilize new features in our development efforts. This presentation takes a look at the fe ...
... With every new release of DB2 we look to see what features will allow us to improve the capabilities and performance of our existing applications as well as the availability of our data. We also have to plan to utilize new features in our development efforts. This presentation takes a look at the fe ...
Relational Processing of Tape Databases
... The essence of relational processing is to use more than one file to store your information in an efficient, easily maintained way. Figure 1 shows how a name file and Zip Code file can be related to show which city each person lives in. The name of the city is not on the file with the person's name. ...
... The essence of relational processing is to use more than one file to store your information in an efficient, easily maintained way. Figure 1 shows how a name file and Zip Code file can be related to show which city each person lives in. The name of the city is not on the file with the person's name. ...
Chapter -3
... the application follows a logical access path • When the DBMS goes to a storage device to retrieve the requested data, it follows a path to the physical location (physical access path) where the data is stored ...
... the application follows a logical access path • When the DBMS goes to a storage device to retrieve the requested data, it follows a path to the physical location (physical access path) where the data is stored ...
Chapter 3: Organizing Data and Information
... the application follows a logical access path • When the DBMS goes to a storage device to retrieve the requested data, it follows a path to the physical location (physical access path) where the data is stored ...
... the application follows a logical access path • When the DBMS goes to a storage device to retrieve the requested data, it follows a path to the physical location (physical access path) where the data is stored ...
Mining Very Large Databases
... than the user-specified minimum and retains only the frequent i-itemsets. In the first round, the generated set of candidate itemsets contains all 1-itemsets. The algorithm counts their support during the candidate counting step. Thus, after the first round, all frequent 1-itemsets are known. What a ...
... than the user-specified minimum and retains only the frequent i-itemsets. In the first round, the generated set of candidate itemsets contains all 1-itemsets. The algorithm counts their support during the candidate counting step. Thus, after the first round, all frequent 1-itemsets are known. What a ...
Clonedb - New Zealand Oracle Users Group
... • Copy-On-Write location is NFS. Is that an issue for you? • If a cloned database is to be used for performance testing, do you really want a different storage technology in the mix? • Possible performance improvements on the horizon? ...
... • Copy-On-Write location is NFS. Is that an issue for you? • If a cloned database is to be used for performance testing, do you really want a different storage technology in the mix? • Possible performance improvements on the horizon? ...
Data Access with SQL Server 2005 Mobile Edition and the
... Proxy server login and password information ...
... Proxy server login and password information ...
Access Project 2
... A calculated field is a field that can be computed from other fields in a table (s) To enter a calculated field, enter the following - a name for the calculated field - a colon - the expression Field names in the expression must be enclosed in brackets [ ] Constants, such as .05, are not e ...
... A calculated field is a field that can be computed from other fields in a table (s) To enter a calculated field, enter the following - a name for the calculated field - a colon - the expression Field names in the expression must be enclosed in brackets [ ] Constants, such as .05, are not e ...
authorization
... ASP.NET Architecture - Gatekeepers ASP.NET – has 2 gatekeepers UrlAuthorizationModule Configure elements in
Web.Config to configure access
Based on IPrincipal (stored in HttpContext.User)
...
... ASP.NET Architecture - Gatekeepers ASP.NET – has 2 gatekeepers UrlAuthorizationModule Configure
Database redesign
... • Changing a table name has a surprising number of potential consequences: – Relying on views to access all tables makes this a bit easier to deal with – Only views that define the aliases would need to be changed when the source table name is changed ...
... • Changing a table name has a surprising number of potential consequences: – Relying on views to access all tables makes this a bit easier to deal with – Only views that define the aliases would need to be changed when the source table name is changed ...
Win XP Notes
... If you have installed an additional hard disk and wish to partition and format it, the disk will be represented as grey 'unpartitioned space' in the graphical display at the bottom of the screen, and can be partitioned and formatted by right clicking on the drive and selecting the partition option t ...
... If you have installed an additional hard disk and wish to partition and format it, the disk will be represented as grey 'unpartitioned space' in the graphical display at the bottom of the screen, and can be partitioned and formatted by right clicking on the drive and selecting the partition option t ...
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"".