Using Patterns to Move the Application Data Layer to the Cloud
... implemented in the business layer. An example of missing functionality are joins. Implementation of the missing functionality on a higher application layer requires all data to be retrieved from the database layer and leads to increased network load. Solution: A component implements the required fun ...
... implemented in the business layer. An example of missing functionality are joins. Implementation of the missing functionality on a higher application layer requires all data to be retrieved from the database layer and leads to increased network load. Solution: A component implements the required fun ...
NoCOUG Persistance of Memory Issues
... No one knows how code really works Why are these values appearing and disappearing? App is inserting/deleting the rows with the 3rd distinct value This change causes optimizer to choose bad plan ...
... No one knows how code really works Why are these values appearing and disappearing? App is inserting/deleting the rows with the 3rd distinct value This change causes optimizer to choose bad plan ...
Intro to laboratory work: SQL Data Manipulation 1
... - develop and write SQL Code to implement database The most popular, and now standard, language for manipulating tables in a relational database is SQL. SQL, often known as a query language, is a combined DDL, DML and DCL used with relational databases. ...
... - develop and write SQL Code to implement database The most popular, and now standard, language for manipulating tables in a relational database is SQL. SQL, often known as a query language, is a combined DDL, DML and DCL used with relational databases. ...
T - Read
... is written, where V1 is the value of X before the write, and V2 is the value to be written to X. this records notes that Ti has performed a write on data item X, and X had value V1 before the write, and will have value V2 after the write when Ti finishes its last statement, i.e., commit statement ...
... is written, where V1 is the value of X before the write, and V2 is the value to be written to X. this records notes that Ti has performed a write on data item X, and X had value V1 before the write, and will have value V2 after the write when Ti finishes its last statement, i.e., commit statement ...
Rational® XDE™ Model Structure Guidelines for J2EE™ Rational Software White Paper
... 4. RUP Model to XDE Model Mapping Before describing how to represent the RUP model artifacts in XDE, it is important to address the confusion between a "RUP model" and an "XDE model" because they are different things and the mapping from the RUP models to the associated XDE models is not always one- ...
... 4. RUP Model to XDE Model Mapping Before describing how to represent the RUP model artifacts in XDE, it is important to address the confusion between a "RUP model" and an "XDE model" because they are different things and the mapping from the RUP models to the associated XDE models is not always one- ...
Normalization-Anomalies
... Edgar F. Codd first proposed the process of normalization and what came to be known as the 1st normal form: There is, in fact, a very simple elimination[1] procedure which we shall call normalization. Through decomposition non-simple domains are replaced by "domains whose elements are atomic (non-de ...
... Edgar F. Codd first proposed the process of normalization and what came to be known as the 1st normal form: There is, in fact, a very simple elimination[1] procedure which we shall call normalization. Through decomposition non-simple domains are replaced by "domains whose elements are atomic (non-de ...
Introduction - Gavin Soorma
... The datafile names need not be changed as the entire database in being migrated to 10g. As a bonus this database is being upgraded to 10.2.0.3. The SOURCE database was 10.2.0.2. All one has to do is create the new database in the higher version and simply plug the SOURCE tablespaces into the TARGET ...
... The datafile names need not be changed as the entire database in being migrated to 10g. As a bonus this database is being upgraded to 10.2.0.3. The SOURCE database was 10.2.0.2. All one has to do is create the new database in the higher version and simply plug the SOURCE tablespaces into the TARGET ...
Database Magic
... printed word and creation of libraries with their card catalogs, and finally to the development of the computer. Computerized databases are collections of information that are organized by records and fields and can be easily searched to quickly retrieve the desired information by sorting or filteri ...
... printed word and creation of libraries with their card catalogs, and finally to the development of the computer. Computerized databases are collections of information that are organized by records and fields and can be easily searched to quickly retrieve the desired information by sorting or filteri ...
Document
... To execute a statement against a database, the following flow is observed Load the driver (Only performed once) Obtain a Connection to the database (Save for later use) Obtain a Statement object from the Connection Use the Statement object to execute SQL. Updates, inserts and deletes return Boolean. ...
... To execute a statement against a database, the following flow is observed Load the driver (Only performed once) Obtain a Connection to the database (Save for later use) Obtain a Statement object from the Connection Use the Statement object to execute SQL. Updates, inserts and deletes return Boolean. ...
Microsoft SQL Server - Microsoft Center
... It may seem overwhelming, but the good news is organizations of all types have the opportunity to use that data to drive smarter decisions. Today data is a currency, a compass, and a new natural resource that can be tapped to provide new forms of value. Companies that recognize this are differentiat ...
... It may seem overwhelming, but the good news is organizations of all types have the opportunity to use that data to drive smarter decisions. Today data is a currency, a compass, and a new natural resource that can be tapped to provide new forms of value. Companies that recognize this are differentiat ...
Document
... This is the directory in which Tomcat will place all servlets that are generated from JSPs. If you want to see exactly how a particular JSP is interpreted, look in this directory. ...
... This is the directory in which Tomcat will place all servlets that are generated from JSPs. If you want to see exactly how a particular JSP is interpreted, look in this directory. ...
the data warehouse backroom
... chapter will help you to better understand the purpose, performance and behavior of the Integration Services when you do the tool exercises in the last chapter of this document. The last chapter provides step by step tutorials in the SSIS and the SSAS environments: Tool Exercises: This chapter wil ...
... chapter will help you to better understand the purpose, performance and behavior of the Integration Services when you do the tool exercises in the last chapter of this document. The last chapter provides step by step tutorials in the SSIS and the SSAS environments: Tool Exercises: This chapter wil ...
Automating layout of relational databases
... against the system. For example, for a single-table query that involves the scan of a large table (or index), it may be advantageous to define a layout in which the referenced table (or index) is allocated on a large number of disks. This is because the object can be scanned in parallel on all disks ...
... against the system. For example, for a single-table query that involves the scan of a large table (or index), it may be advantageous to define a layout in which the referenced table (or index) is allocated on a large number of disks. This is because the object can be scanned in parallel on all disks ...
Preventing Transaction Logs From Filling Up
... growing too large. This document will cover the steps necessary to recover in the event that the transaction log has grown too large, manual truncation of the transaction log before it becomes a problem and how to schedule a maintenance plan. The transaction log is responsible for keeping track of a ...
... growing too large. This document will cover the steps necessary to recover in the event that the transaction log has grown too large, manual truncation of the transaction log before it becomes a problem and how to schedule a maintenance plan. The transaction log is responsible for keeping track of a ...
Berkeley DB Proceedings of the FREENIX Track: 1999 USENIX Annual Technical Conference
... multi-user operation, since no overhead is incurred by locking. Running with the recovery system disabled is faster than running with it enabled, since log records need not be written when changes are made to the database. ...
... multi-user operation, since no overhead is incurred by locking. Running with the recovery system disabled is faster than running with it enabled, since log records need not be written when changes are made to the database. ...
Oracle Database 11g Family
... Oracle Real Application Clusters (RAC) harnesses the processing power of multiple, interconnected servers on a cluster. It provides unlimited scalability and high availability for any packaged or custom application by exploiting clustered hardware configurations, with the simplicity and ease of use ...
... Oracle Real Application Clusters (RAC) harnesses the processing power of multiple, interconnected servers on a cluster. It provides unlimited scalability and high availability for any packaged or custom application by exploiting clustered hardware configurations, with the simplicity and ease of use ...
Teiid Embedded Quick Start Example
... 1. Teiid Source - contains all the source code for all modules 2. Teiid Binary - contains all the binary code for all modules 3. Teiid Embedded Kit - contains only required modules and their required 3rd party dependencies For this Quick Start, download the Teiid Embedded Kit and extract this tar/zi ...
... 1. Teiid Source - contains all the source code for all modules 2. Teiid Binary - contains all the binary code for all modules 3. Teiid Embedded Kit - contains only required modules and their required 3rd party dependencies For this Quick Start, download the Teiid Embedded Kit and extract this tar/zi ...
Document
... 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 ...
Integration and Virtualization of Relational SQL and NoSQL Systems
... NoSQL (“Not Only SQL”) systems have been released and widely adopted in many domains. NoSQL systems have been developed to support applications not well served by relational systems, often involving Big Data processing. NoSQL systems can be categorized as key-value stores, document stores, and graph ...
... NoSQL (“Not Only SQL”) systems have been released and widely adopted in many domains. NoSQL systems have been developed to support applications not well served by relational systems, often involving Big Data processing. NoSQL systems can be categorized as key-value stores, document stores, and graph ...
learning ontology from relational database
... the new database schema is mapping into the ontology by reverse engineering techniques. During the transformation, the approach uses a new database schema as middle model, which is different from ours. Moreover, the semantic characteristics of the database schema are not always analyzed. The method ...
... the new database schema is mapping into the ontology by reverse engineering techniques. During the transformation, the approach uses a new database schema as middle model, which is different from ours. Moreover, the semantic characteristics of the database schema are not always analyzed. The method ...
Module 1: Introduction
... Forms of authorization to modify the database schema (covered in Chapter 8): Index - allows creation and deletion of indices. Resources - allows creation of new relations. Alteration - allows addition or deletion of attributes in a relation. ...
... Forms of authorization to modify the database schema (covered in Chapter 8): Index - allows creation and deletion of indices. Resources - allows creation of new relations. Alteration - allows addition or deletion of attributes in a relation. ...
Flexible Database Transformations: The SERF Approach
... In general in a SERF transformation there are three types of steps: Step A: Change the Schema. We require that all structural changes, i.e., changes to the schema, are exclusively made through the schema evolution primitives. This helps us in guaranteeing the schema consistency after the application ...
... In general in a SERF transformation there are three types of steps: Step A: Change the Schema. We require that all structural changes, i.e., changes to the schema, are exclusively made through the schema evolution primitives. This helps us in guaranteeing the schema consistency after the application ...
TransactionsAndRecovery
... Saving the initial database state D1 before starting the transaction T: D1->D2 (transaction begins) Saving all intermediate states D11, D12 … (checkpoint logs) In the case of a failure at an intermediate state D1i before reaching D2, restore D1 (rollback); the simplest strategy is to apply a series ...
... Saving the initial database state D1 before starting the transaction T: D1->D2 (transaction begins) Saving all intermediate states D11, D12 … (checkpoint logs) In the case of a failure at an intermediate state D1i before reaching D2, restore D1 (rollback); the simplest strategy is to apply a series ...
A New Technique to Backup and Restore DBMS using XML
... On the other hand, most companies, and due to the different III. BACKUP TYPES source of applications, they use more than one DBMS, like In information technology, backup refers to making copies SQL Server [1], Oracle [2], Sybase, DB2 and others. Each one of data so that these additional copies may b ...
... On the other hand, most companies, and due to the different III. BACKUP TYPES source of applications, they use more than one DBMS, like In information technology, backup refers to making copies SQL Server [1], Oracle [2], Sybase, DB2 and others. Each one of data so that these additional copies may b ...