Relationship Sets
... More Weak Entity Set Examples In a university, a course is a strong entity and a course-offering can be modeled as a weak entity The discriminator of course-offering would be semester (including year) and section-number (if there is more than one section) If we model course-offering as a stro ...
... More Weak Entity Set Examples In a university, a course is a strong entity and a course-offering can be modeled as a weak entity The discriminator of course-offering would be semester (including year) and section-number (if there is more than one section) If we model course-offering as a stro ...
Database Engine Tuning Advisor (DTA) in SQL Server 2005
... estimated cost for the given workload. Note that if the workload contains insert, update, or delete statements, DTA automatically takes into account the cost of updating the physical design structures. The following features make DTA very useful for database administrators. Powerful what-if analysis ...
... estimated cost for the given workload. Note that if the workload contains insert, update, or delete statements, DTA automatically takes into account the cost of updating the physical design structures. The following features make DTA very useful for database administrators. Powerful what-if analysis ...
Chapter 7: Relational Database Design
... Example: Strings would normally be considered indivisible Suppose that students are given roll numbers which are strings of the form CS0012 or EE1127 If the first two characters are extracted to find the department, the domain of roll numbers is not atomic. Doing so is a bad idea: leads to encodi ...
... Example: Strings would normally be considered indivisible Suppose that students are given roll numbers which are strings of the form CS0012 or EE1127 If the first two characters are extracted to find the department, the domain of roll numbers is not atomic. Doing so is a bad idea: leads to encodi ...
ppt - CSE, IIT Bombay
... F logically implies all dependencies in Fc, and Fc logically implies all dependencies in F, and ...
... F logically implies all dependencies in Fc, and Fc logically implies all dependencies in F, and ...
The Complete Sybase ASE Quick Reference Guide
... Sybase, Transact-SQL, Adaptive Server Enterprise and Replication Server are registered trademarks of Sybase, Inc. Other product or brand names may be (registered) trademarks of their respective owners. Copyright © 2001-2012 Sypron B.V. All rights reserved. No part of this publication may be reproduc ...
... Sybase, Transact-SQL, Adaptive Server Enterprise and Replication Server are registered trademarks of Sybase, Inc. Other product or brand names may be (registered) trademarks of their respective owners. Copyright © 2001-2012 Sypron B.V. All rights reserved. No part of this publication may be reproduc ...
New SQL Features in Firebird
... Same as outer transaction (isolation level, read\write, wait mode, etc) Configurable ? Not yet... may be later ...
... Same as outer transaction (isolation level, read\write, wait mode, etc) Configurable ? Not yet... may be later ...
Databases - JB on programming
... 1.1.10 See also . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
... 1.1.10 See also . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
Serial benchmarks in Mysql, Oracle and PostgreSQL
... the different Linux flavours, this also applies to the database files them selves which are located in the /var/lib/MySQL. Regardless of the storage engine, every MySQL table you create is represented, on disk, by a .frm file, which describes the table’s format (i.e. the table definition). The file ...
... the different Linux flavours, this also applies to the database files them selves which are located in the /var/lib/MySQL. Regardless of the storage engine, every MySQL table you create is represented, on disk, by a .frm file, which describes the table’s format (i.e. the table definition). The file ...
Chapter 7: Relational Database Design
... F logically implies all dependencies in Fc, and Fc logically implies all dependencies in F, and ...
... F logically implies all dependencies in Fc, and Fc logically implies all dependencies in F, and ...
ppt - Purdue Computer Science
... F logically implies all dependencies in Fc, and Fc logically implies all dependencies in F, and ...
... F logically implies all dependencies in Fc, and Fc logically implies all dependencies in F, and ...
A Stored Procedure
... The first command is DELIMITER //, which is not related to the stored procedure syntax. The DELIMITER statement changes the standard delimiter which is semicolon ( ; ) to another. In this case, the delimiter is changed from the semicolon ( ; ) to double-slashes //. Why do we have to change the delim ...
... The first command is DELIMITER //, which is not related to the stored procedure syntax. The DELIMITER statement changes the standard delimiter which is semicolon ( ; ) to another. In this case, the delimiter is changed from the semicolon ( ; ) to double-slashes //. Why do we have to change the delim ...
Facilities and Techniques for Event Processing
... Because it enables asynchronous processing, data can be loaded into a queue table and buffered until it can be processed by procedures that perform potentially complex analysis or insertion of data. Periodic polling relies on a program querying a table at regular intervals, a table that is acting as ...
... Because it enables asynchronous processing, data can be loaded into a queue table and buffered until it can be processed by procedures that perform potentially complex analysis or insertion of data. Periodic polling relies on a program querying a table at regular intervals, a table that is acting as ...
Agile Product Lifecycle Management
... There will be an itemized part list within each of the packs and you will need to download all items in order to have the complete download for the desired Oracle Agile release. All Oracle E-Delivery files have been archived using Info-ZIP's highly portable Zip utility. After downloading one or more ...
... There will be an itemized part list within each of the packs and you will need to download all items in order to have the complete download for the desired Oracle Agile release. All Oracle E-Delivery files have been archived using Info-ZIP's highly portable Zip utility. After downloading one or more ...
Chapter 1 - Databases and information models
... The licensed program described in this document and all licensed material available for it are provided by IBM under terms of the IBM Customer Agreement, IBM International Program License Agreement or any equivalent agreement between us. Any performance data contained herein was determined in a cont ...
... The licensed program described in this document and all licensed material available for it are provided by IBM under terms of the IBM Customer Agreement, IBM International Program License Agreement or any equivalent agreement between us. Any performance data contained herein was determined in a cont ...
DDL
... NTEXT), numeric data in numeric type columns (INT, BIGINT, TINYINT, SMALLMONEY, MONEY, DECIMAL/NUMERIC, FLOAT), and date and time data in SMALLDATE or DATETIME data types. For example, although you can store numeric and datetime information in character-based fields, doing so may slow down your perf ...
... NTEXT), numeric data in numeric type columns (INT, BIGINT, TINYINT, SMALLMONEY, MONEY, DECIMAL/NUMERIC, FLOAT), and date and time data in SMALLDATE or DATETIME data types. For example, although you can store numeric and datetime information in character-based fields, doing so may slow down your perf ...
Lecture 8 - Electrical and Computer Engineering Department
... ©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 ...
Ch3
... Example: {customer-name} is a candidate key for Customer, since it is a superkey (assuming no two customers can possibly have the same name), and no subset of it is a superkey. ...
... Example: {customer-name} is a candidate key for Customer, since it is a superkey (assuming no two customers can possibly have the same name), and no subset of it is a superkey. ...
Greenplum Database 4.3.0.0 Release Notes
... supports next generation data warehousing and large-scale analytics processing. By automatically partitioning data and running parallel queries, it allows a cluster of servers to operate as a single database supercomputer performing tens or hundreds times faster than a traditional database. It suppo ...
... supports next generation data warehousing and large-scale analytics processing. By automatically partitioning data and running parallel queries, it allows a cluster of servers to operate as a single database supercomputer performing tens or hundreds times faster than a traditional database. It suppo ...
Chapter 2: Relational Model
... R-S (R-S (r ) x s ) – R-S,S(r) ) gives those tuples t in R-S (r ) such that for some tuple u s, tu r. ...
... R-S (R-S (r ) x s ) – R-S,S(r) ) gives those tuples t in R-S (r ) such that for some tuple u s, tu r. ...
Firebird 3.0.0 Release Notes
... Documentation ............................................................................................................................... 1 2. New In Firebird 3.0 ........................................................................................................................... 2 Summary ...
... Documentation ............................................................................................................................... 1 2. New In Firebird 3.0 ........................................................................................................................... 2 Summary ...
Chapter 2 Notes
... Binary versus n-ary relationship sets Although it is possible to replace any nonbinary (n-ary, for n > 2) relationship set by a number of distinct binary relationship sets, a nary relationship set shows more clearly that several entities participate in a single relationship. Placement of relatio ...
... Binary versus n-ary relationship sets Although it is possible to replace any nonbinary (n-ary, for n > 2) relationship set by a number of distinct binary relationship sets, a nary relationship set shows more clearly that several entities participate in a single relationship. Placement of relatio ...
Database Toolbox User`s Guide
... platforms. Note that for MATLAB Release 12, the Database Toolbox does not run on the HP 10.2 platform. • Over 30 new functions – These include an invaluable set of functions for retrieving database metadata so you can find out information about the database, for example, table names and column names ...
... platforms. Note that for MATLAB Release 12, the Database Toolbox does not run on the HP 10.2 platform. • Over 30 new functions – These include an invaluable set of functions for retrieving database metadata so you can find out information about the database, for example, table names and column names ...
Chapter 14: Query Optimization
... 7. The selection operation distributes over the theta join operation under the following two conditions: (a) When all the attributes in 0 involve only the attributes of one of the expressions (E1) being joined. 0E1 ...
... 7. The selection operation distributes over the theta join operation under the following two conditions: (a) When all the attributes in 0 involve only the attributes of one of the expressions (E1) being joined. 0E1 ...
Delphi Database Application Developer`s Guide
... These features include local SQL, which is a subset of the industry-standard SQL that enables you to issue SQL statements against Paradox and dBASE tables; low-level API function calls for direct engine access; and ODBC support for communication with other ODBC-compliant databases, such as Access an ...
... These features include local SQL, which is a subset of the industry-standard SQL that enables you to issue SQL statements against Paradox and dBASE tables; low-level API function calls for direct engine access; and ODBC support for communication with other ODBC-compliant databases, such as Access an ...