15. Concurrency Control
... A node Q can be locked by Ti in S or IS mode only if the parent of Q is currently locked by Ti in either IX or IS mode. A node Q can be locked by Ti in X, SIX, or IX mode only if the parent of Q is currently locked by Ti in either IX or SIX mode. Ti can lock a node only if it has not previously unlo ...
... A node Q can be locked by Ti in S or IS mode only if the parent of Q is currently locked by Ti in either IX or IS mode. A node Q can be locked by Ti in X, SIX, or IX mode only if the parent of Q is currently locked by Ti in either IX or SIX mode. Ti can lock a node only if it has not previously unlo ...
In the SAS System a Database Management System?
... The objective Is to s~parate Ihe application from Ihe dala so Ihat the application can focus on the external or logical aspects of Ihe data such as analysis and presenlatlon. The DBMS rocuses on managing the Inlernal or physical aspects 01 the dala such as Ihe Iype and quantity of slorage devices' a ...
... The objective Is to s~parate Ihe application from Ihe dala so Ihat the application can focus on the external or logical aspects of Ihe data such as analysis and presenlatlon. The DBMS rocuses on managing the Inlernal or physical aspects 01 the dala such as Ihe Iype and quantity of slorage devices' a ...
(Computer Engineering) Part-II, III, IV(Semester
... Note:- Attempt four questions selecting one question from each section A, B, C and D. Section E is compulsory. Section-A (From Section A of the syllabus) Q1. ......................................................................... Q2. ................................................................ ...
... Note:- Attempt four questions selecting one question from each section A, B, C and D. Section E is compulsory. Section-A (From Section A of the syllabus) Q1. ......................................................................... Q2. ................................................................ ...
Spring 2002 Transaction Information Systems
... • Repeatable read — only committed records to be read, repeated reads of same record must return same value. However, a transaction may not be serializable – it may find some records inserted by a transaction but not find others. • Read committed — only committed records can be read, but successive ...
... • Repeatable read — only committed records to be read, repeated reads of same record must return same value. However, a transaction may not be serializable – it may find some records inserted by a transaction but not find others. • Read committed — only committed records can be read, but successive ...
Orator Documentation
... Now, the logger orator.connection.queries will be logging queries at debug level: Executed SELECT COUNT(*) AS aggregate FROM "users" in 1.18ms ...
... Now, the logger orator.connection.queries will be logging queries at debug level: Executed SELECT COUNT(*) AS aggregate FROM "users" in 1.18ms ...
Introduction to External SQL Sources
... It is the intent of this technical brief to help FileMaker® Pro developers and other information systems professionals better understand the new External SQL Data Sources (ESS) feature set introduced in the FileMaker Pro 9 product line and available in the FileMaker Pro 10 product line. Reading this ...
... It is the intent of this technical brief to help FileMaker® Pro developers and other information systems professionals better understand the new External SQL Data Sources (ESS) feature set introduced in the FileMaker Pro 9 product line and available in the FileMaker Pro 10 product line. Reading this ...
cikm2004.heqi - School of Computing
... are FDs partially holding in a relation, in the sense that only some tuples, called exceptions, break the dependencies. These dependencies include weak FDs [7], afunctional dependencies [3] and partial FDs [2]. ...
... are FDs partially holding in a relation, in the sense that only some tuples, called exceptions, break the dependencies. These dependencies include weak FDs [7], afunctional dependencies [3] and partial FDs [2]. ...
RMAN Cloning using Recovery Catalog
... Note: To make it easy for you, just copy the entries in any one of the tnsnames.ora file and paste it into the tnsnames.ora file of other two databases. Then, you are done with configuring the TNS names. The purpose of configuring the LISTENER and TNSNAMES for each and every database is to access th ...
... Note: To make it easy for you, just copy the entries in any one of the tnsnames.ora file and paste it into the tnsnames.ora file of other two databases. Then, you are done with configuring the TNS names. The purpose of configuring the LISTENER and TNSNAMES for each and every database is to access th ...
XML - Cern
... SYS_XMLGEN Converts a scalar value, UDT instance, or XMLType instance to an XML document An optional XMLGenFormatType object specifies formatting options for the result Returns an XMLType Is used to create and query XML instances within SQL queries. SELECT SYS_XMLGEN(empno*2) FROM emp where ...
... SYS_XMLGEN Converts a scalar value, UDT instance, or XMLType instance to an XML document An optional XMLGenFormatType object specifies formatting options for the result Returns an XMLType Is used to create and query XML instances within SQL queries. SELECT SYS_XMLGEN(empno*2) FROM emp where ...
PRODUCT SPECIFIC LICENSE TERMS Sybase®SQL
... THE PROGRAM TO (OR ALLOW THE USE OF THE PROGRAM BY) ANY THIRD PARTY EXCEPT AS PERMITTED BELOW, “RIGHT TO COPY AND DISTRIBUTE FOR THE PERMITTED PURPOSES”. The Program contains or is provided with component software products from both Sybase and third parties. Except as otherwise specifically authoriz ...
... THE PROGRAM TO (OR ALLOW THE USE OF THE PROGRAM BY) ANY THIRD PARTY EXCEPT AS PERMITTED BELOW, “RIGHT TO COPY AND DISTRIBUTE FOR THE PERMITTED PURPOSES”. The Program contains or is provided with component software products from both Sybase and third parties. Except as otherwise specifically authoriz ...
ABAP for Functional Consultants
... Transparent tables defined using transaction SE11 Transparent tables defined in the application as a part of the corresponding database table that stores the actual data. The fields of the transparent table point to the corresponding columns on the database table. Data elements refer to domains for ...
... Transparent tables defined using transaction SE11 Transparent tables defined in the application as a part of the corresponding database table that stores the actual data. The fields of the transparent table point to the corresponding columns on the database table. Data elements refer to domains for ...
DBA Guide to Databases on VMware
... system is configured can become limiting factors, as can the database software configuration. The way the database is physically laid out on the disk drives and the types of indexing chosen also have an effect. The way queries against the database are coded can dramatically change how quickly result ...
... system is configured can become limiting factors, as can the database software configuration. The way the database is physically laid out on the disk drives and the types of indexing chosen also have an effect. The way queries against the database are coded can dramatically change how quickly result ...
Lecture 28
... value was produced by transaction Tj (if any), then in schedule S’ also transaction Ti must read the value of Q that was produced by the same write(Q) operation of transaction Tj . 3. The transaction (if any) that performs the final write(Q) operation in schedule S must also perform the final write( ...
... value was produced by transaction Tj (if any), then in schedule S’ also transaction Ti must read the value of Q that was produced by the same write(Q) operation of transaction Tj . 3. The transaction (if any) that performs the final write(Q) operation in schedule S must also perform the final write( ...
Part
... The getMetaData method (lines 180, 185) in the ResultSet interface is used to obtain an instance of ResultSetMetaData. The getColumnCount method (line 180) returns the number of columns in the result set, and ...
... The getMetaData method (lines 180, 185) in the ResultSet interface is used to obtain an instance of ResultSetMetaData. The getColumnCount method (line 180) returns the number of columns in the result set, and ...
Tampa Bay Division
... f. triggers – files that automate the creation of triggers g. views – files that automate the creation of views f. schema – the database schema for the project 4) sql - the top level folder containing the folders and files used in databases and sql a. @databases – the top level folder containing fol ...
... f. triggers – files that automate the creation of triggers g. views – files that automate the creation of views f. schema – the database schema for the project 4) sql - the top level folder containing the folders and files used in databases and sql a. @databases – the top level folder containing fol ...
Part IV: Java Database Programming This part of the book discusses
... object. Only one ResultSet per Statement can be open at any point in time. Therefore, if the reading of one ResultSet is interleaved with the reading of another, each must have been generated by different statements. All statement-execute methods implicitly close a statement's current ResultSet if a ...
... object. Only one ResultSet per Statement can be open at any point in time. Therefore, if the reading of one ResultSet is interleaved with the reading of another, each must have been generated by different statements. All statement-execute methods implicitly close a statement's current ResultSet if a ...
Best Practices for Synchronous Redo Transport
... the impact of synchronous transport on primary database performance by further shortening the total round-trip time between primary and standby. Fast Sync can introduce a very small exposure to data loss should simultaneous failures impact both primary and standby databases before the standby I/O co ...
... the impact of synchronous transport on primary database performance by further shortening the total round-trip time between primary and standby. Fast Sync can introduce a very small exposure to data loss should simultaneous failures impact both primary and standby databases before the standby I/O co ...
Chapter12 Access databases
... Having the Computer Create a Bound Control (cont'd.) • TableAdapter object: connects the database to the DataSet object • DataSet object: stores the information to be accessed from the database • TableAdapterManager object: handles saving data to multiple tables in the DataSet • BindingSource objec ...
... Having the Computer Create a Bound Control (cont'd.) • TableAdapter object: connects the database to the DataSet object • DataSet object: stores the information to be accessed from the database • TableAdapterManager object: handles saving data to multiple tables in the DataSet • BindingSource objec ...
Database model
A database model is a type of data model that determines the logical structure of a database and fundamentally determines in which manner data can be stored, organized, and manipulated. The most popular example of a database model is the relational model, which uses a table-based format.