Chapter 2: Relational Model
... Null Values It is possible for tuples to have a null value, denoted by null, for some ...
... Null Values It is possible for tuples to have a null value, denoted by null, for some ...
Using SQL in an Application - Computer Science, Stony Brook
... Transaction boundaries Autocommit mode: each SQL statement is a transaction. To group several statements into a transaction use con.setAutoCommit (false) ...
... Transaction boundaries Autocommit mode: each SQL statement is a transaction. To group several statements into a transaction use con.setAutoCommit (false) ...
Chapter 7: Relational Database Design
... Suppose R is not in BCNF, and X A is a FD where X A = that violates the condition. 1. Remove A from R 2. Create a new relational schema XA 3. Repeat this process until all the relations are in BCNF ...
... Suppose R is not in BCNF, and X A is a FD where X A = that violates the condition. 1. Remove A from R 2. Create a new relational schema XA 3. Repeat this process until all the relations are in BCNF ...
Enterprise Java Beans Lecture Stucture
... Transactions is the execution of a unit-of-work that accesses on or more resources, usually databases A unit-of-work is a set of activities that relate to each other and must be completed together The objective with transactions is to execute an unit-of work that results in a reliable exchange ...
... Transactions is the execution of a unit-of-work that accesses on or more resources, usually databases A unit-of-work is a set of activities that relate to each other and must be completed together The objective with transactions is to execute an unit-of work that results in a reliable exchange ...
JCA with JBoss Application Server 6
... 2.1. How to Use Alternative Databases JBoss utilizes the Hypersonic database as its default database. While this is good for development and prototyping, you or your company will probably require another database to be used for production. This chapter covers configuring JBoss AS to use alternative ...
... 2.1. How to Use Alternative Databases JBoss utilizes the Hypersonic database as its default database. While this is good for development and prototyping, you or your company will probably require another database to be used for production. This chapter covers configuring JBoss AS to use alternative ...
Database Processing
... exposes much of its technology to the developer; consequently, it can be tuned and tailored in many ways. All of this means, however, that Oracle can be difficult to install and daunting to learn. A gauge of Oracle’s breadth is that one of the most popular references, Oracle Database 11g: The Comple ...
... exposes much of its technology to the developer; consequently, it can be tuned and tailored in many ways. All of this means, however, that Oracle can be difficult to install and daunting to learn. A gauge of Oracle’s breadth is that one of the most popular references, Oracle Database 11g: The Comple ...
KorthDB6_ch3
... 3.4 Additional Basic Operations 3.5 Set Operations 3.6 Null Values 3.7 Aggregate Functions ...
... 3.4 Additional Basic Operations 3.5 Set Operations 3.6 Null Values 3.7 Aggregate Functions ...
ppt
... 1. r, s must have the same arity (same number of attributes) 2. The attribute domains must be compatible (example: 2nd column of r deals with the same type of values as does the 2nd column of s) Example: to find all courses taught in the Fall 2009 semester, or in the ...
... 1. r, s must have the same arity (same number of attributes) 2. The attribute domains must be compatible (example: 2nd column of r deals with the same type of values as does the 2nd column of s) Example: to find all courses taught in the Fall 2009 semester, or in the ...
ppt - FCN
... 1. r, s must have the same arity (same number of attributes) 2. The attribute domains must be compatible (example: 2nd column of r deals with the same type of values as does the 2nd column of s) Example: to find all courses taught in the Fall 2009 semester, or in the ...
... 1. r, s must have the same arity (same number of attributes) 2. The attribute domains must be compatible (example: 2nd column of r deals with the same type of values as does the 2nd column of s) Example: to find all courses taught in the Fall 2009 semester, or in the ...
DBA-ch02-Oracle Architecture
... The Database Control Interface (continued) • Tabs (continued) – Administration • Provides a multitude of options for administration ...
... The Database Control Interface (continued) • Tabs (continued) – Administration • Provides a multitude of options for administration ...
ECP2.1 Upgrade Node Linux
... behavior of ECP across all the supported databases. Oracle and PostgreSQL use case sensitive search by default while MySQL and MSSQL are case insensitive. This can lead to some minor issues during message transportation when the message passes through databases with different case sensitivity. Takin ...
... behavior of ECP across all the supported databases. Oracle and PostgreSQL use case sensitive search by default while MySQL and MSSQL are case insensitive. This can lead to some minor issues during message transportation when the message passes through databases with different case sensitivity. Takin ...
ASE 15.7 SP100 – New Features Guide – Sybase, Inc
... with time='time' – specifies the maximum length of time alter database ... off may run, and is specified as hours, minutes, and seconds (HH:MM:SS). If you do not include the full specification, alter database interprets the missing sections for time as: • XX:YY is interpreted as MM:SS. • XX is inter ...
... with time='time' – specifies the maximum length of time alter database ... off may run, and is specified as hours, minutes, and seconds (HH:MM:SS). If you do not include the full specification, alter database interprets the missing sections for time as: • XX:YY is interpreted as MM:SS. • XX is inter ...
Chapter 21:Application Development and Administration
... A partitioned index is made up of multiple B+-trees, one per partition ...
... A partitioned index is made up of multiple B+-trees, one per partition ...
No Slide Title
... (D1) customer-name = {Jones, Smith, Curry, Lindsay} (D2) customer-street = {Main, North, Park} (D3) customer-city = {Harrison, Rye, Pittsfield} Then r = { (Jones, Main, Harrison), (Smith, North, Rye), (Curry, North, Rye), (Lindsay, Park, Pittsfield)} is a relation over customer-name x customer-stree ...
... (D1) customer-name = {Jones, Smith, Curry, Lindsay} (D2) customer-street = {Main, North, Park} (D3) customer-city = {Harrison, Rye, Pittsfield} Then r = { (Jones, Main, Harrison), (Smith, North, Rye), (Curry, North, Rye), (Lindsay, Park, Pittsfield)} is a relation over customer-name x customer-stree ...
Document
... Consider each pair of tuples tr from r and ts from s. If tr and ts have the same value on each of the attributes in R S, add a tuple t to the result, where t has the same value as t on r ...
... Consider each pair of tuples tr from r and ts from s. If tr and ts have the same value on each of the attributes in R S, add a tuple t to the result, where t has the same value as t on r ...
ppt
... For AV (r) just scan leaf pages of index finding pointers to records, till first entry > v In either case, retrieve records that are pointed to – requires an I/O for each record – Linear file scan may be cheaper if many records are to be fetched! ...
... For AV (r) just scan leaf pages of index finding pointers to records, till first entry > v In either case, retrieve records that are pointed to – requires an I/O for each record – Linear file scan may be cheaper if many records are to be fetched! ...
Understanding the BarTender System Database
... Deleting records: You can configure the BarTender System Database to delete records older than a specified date. You can optionally archive old records, or simply delete them from the system. Archiving records: If you enable Archive deleted records, you can select a file where your archived records ...
... Deleting records: You can configure the BarTender System Database to delete records older than a specified date. You can optionally archive old records, or simply delete them from the system. Archiving records: If you enable Archive deleted records, you can select a file where your archived records ...
Chapter5. Other Relational Languages
... subformula is true if and only if there is a value of x in dom (P1) such that P1(x ) is true. 3. For every “for all” subformula of the form x (P1 (x )), the subformula is ...
... subformula is true if and only if there is a value of x in dom (P1) such that P1(x ) is true. 3. For every “for all” subformula of the form x (P1 (x )), the subformula is ...
Module 1: Introduction
... where loan.loan_number = borrower.loan_number and borrower.customer_name = depositor.customer_name and depositor.account_number = account.account_number and account.balance >= 1000))) “not exists X such that not P(X)” Database System Concepts - 5th Edition, June 15, 2005 ...
... where loan.loan_number = borrower.loan_number and borrower.customer_name = depositor.customer_name and depositor.account_number = account.account_number and account.balance >= 1000))) “not exists X such that not P(X)” Database System Concepts - 5th Edition, June 15, 2005 ...
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 ...
Chapter 5: Other Relational Languages
... subformula is true if and only if there is a value of x in dom (P1) such that P1(x ) is true. 3. For every “for all” subformula of the form x (P1 (x )), the subformula is ...
... subformula is true if and only if there is a value of x in dom (P1) such that P1(x ) is true. 3. For every “for all” subformula of the form x (P1 (x )), the subformula is ...
ODA X6-2 Model Family Business White Paper-2
... system, storage management, and database software, through appliance patch bundles. It eliminates the guesswork of mixing and matching patches for various elements of the hardware and software stack. This reduces human error and ultimately results in less planned downtime and higher system reliabili ...
... system, storage management, and database software, through appliance patch bundles. It eliminates the guesswork of mixing and matching patches for various elements of the hardware and software stack. This reduces human error and ultimately results in less planned downtime and higher system reliabili ...
Technical Comparison of Oracle Database 10g and SQL Server 2005
... Oracle provides proactive space management capabilities with its space monitoring, notification, and space trending features. Rather than using external tools to poll the database to monitor space usage — something that is inherently resource intensive — Oracle database server has built-in intellige ...
... Oracle provides proactive space management capabilities with its space monitoring, notification, and space trending features. Rather than using external tools to poll the database to monitor space usage — something that is inherently resource intensive — Oracle database server has built-in intellige ...
ppt
... subformula is true if and only if there is a value of x in dom (P1) such that P1(x ) is true. 3. For every “for all” subformula of the form x (P1 (x )), the subformula is ...
... subformula is true if and only if there is a value of x in dom (P1) such that P1(x ) is true. 3. For every “for all” subformula of the form x (P1 (x )), the subformula is ...