Creating Indexes
... Create a sequence to be used with the primary key column of the DEPARTMENT table. The sequence should start at 60 and have a maximum value of 200. Have your sequence increment by ten numbers. Name the sequence DEPT_ID_SEQ. ...
... Create a sequence to be used with the primary key column of the DEPARTMENT table. The sequence should start at 60 and have a maximum value of 200. Have your sequence increment by ten numbers. Name the sequence DEPT_ID_SEQ. ...
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[Powerpoints] - Multi-Tenant Database Model with SQL Azure.zip
... • The SQL Azure database fabric is flexible and scales according to business needs. • The service is supported by multiple servers. • Therefore, it has the ability to provide any required storage capacity. • Also, there is no time delay due to server provisioning. ...
... • The SQL Azure database fabric is flexible and scales according to business needs. • The service is supported by multiple servers. • Therefore, it has the ability to provide any required storage capacity. • Also, there is no time delay due to server provisioning. ...
Connection Management Strategies for Java applications
... database configurations, poor tuning and poor understanding of database capabilities. The Oracle database along with the Oracle JDBC drivers and the Oracle Universal Connection Pool (UCP) offer many connection management strategies to improve the quality of services in terms of performance, scalabil ...
... database configurations, poor tuning and poor understanding of database capabilities. The Oracle database along with the Oracle JDBC drivers and the Oracle Universal Connection Pool (UCP) offer many connection management strategies to improve the quality of services in terms of performance, scalabil ...
1 Data Models, Schemas, and Instances
... The three schema are only descriptions of data. The only data that actually exists is at the physical level. In a DBMS database based on the three-schema architecture, each user group refers only to its own external schema. Thus, the DBMS transforms a request specified on an external schema into a r ...
... The three schema are only descriptions of data. The only data that actually exists is at the physical level. In a DBMS database based on the three-schema architecture, each user group refers only to its own external schema. Thus, the DBMS transforms a request specified on an external schema into a r ...
System Performance
... This interval can usually be set by using a configuration parameter. – Deadlocks occur when two or more application processes hold locks on resources that the others need and without which they cannot proceed. The deadlock detection cycle—that is the time interval between checking for deadlocks—can ...
... This interval can usually be set by using a configuration parameter. – Deadlocks occur when two or more application processes hold locks on resources that the others need and without which they cannot proceed. The deadlock detection cycle—that is the time interval between checking for deadlocks—can ...
Introduction to Physical Database Design
... database model and the subsequent CODASYL report. The debate centered on which logical model was the best database model, and it had continued on in the academic journals and trade magazines for almost 30 more years until Codd’s death in 2003. Since that original debate, many database systems have b ...
... database model and the subsequent CODASYL report. The debate centered on which logical model was the best database model, and it had continued on in the academic journals and trade magazines for almost 30 more years until Codd’s death in 2003. Since that original debate, many database systems have b ...
Java Stored Procedure
... Oracle SQL and PL/SQL through call specifications. The java classes would include SQL statements. • Java enables development of database-neutral code. • A stored procedure is a program that is stored and executed within database server. The procedure may be called from a Java class, from a PL/SQL pr ...
... Oracle SQL and PL/SQL through call specifications. The java classes would include SQL statements. • Java enables development of database-neutral code. • A stored procedure is a program that is stored and executed within database server. The procedure may be called from a Java class, from a PL/SQL pr ...
Introduction - CSE, IIT Bombay
... ■ Provide upward compatibility with existing relational languages. ...
... ■ Provide upward compatibility with existing relational languages. ...
v$session
... Root of this tree represents the symptoms, and going down to the leaves If time-based threshold is not exceeded for a particular node, ADDM prunes the corresponding sub-tree ...
... Root of this tree represents the symptoms, and going down to the leaves If time-based threshold is not exceeded for a particular node, ADDM prunes the corresponding sub-tree ...
Techniques Everyone Should Know
... We concentrate on one of the core techniques in distributed transaction processing: atomic commitment (AC). Very informally, given a transaction that executes on multiple servers (whether multiple replicas, multiple partitions, or both), AC ensures that the transaction either commits or aborts on al ...
... We concentrate on one of the core techniques in distributed transaction processing: atomic commitment (AC). Very informally, given a transaction that executes on multiple servers (whether multiple replicas, multiple partitions, or both), AC ensures that the transaction either commits or aborts on al ...
Object-Oriented Development in a Relational World
... This kind of project cries out for a tool that will take my simple data structures and figure out how to read and write them to and from the database, creating relationship tables as appropriate. And while I’m wishing, as I refactor my structures, such a tool would also be smart enough to rearrange ...
... This kind of project cries out for a tool that will take my simple data structures and figure out how to read and write them to and from the database, creating relationship tables as appropriate. And while I’m wishing, as I refactor my structures, such a tool would also be smart enough to rearrange ...
Chapter 1: Introduction - Universiteit van Amsterdam FNWI
... The ability to specify new tags, and to create nested tag structures ...
... The ability to specify new tags, and to create nested tag structures ...
Recovery
... Managing the DBMS Generate database application performance reports Investigate user performance complaints Assess need for changes in database structure or application design Modify database structure Evaluate and implement new DBMS features Tune the DBMS Kroenke, Database Processing ...
... Managing the DBMS Generate database application performance reports Investigate user performance complaints Assess need for changes in database structure or application design Modify database structure Evaluate and implement new DBMS features Tune the DBMS Kroenke, Database Processing ...
Oracle Data Migration – A Comparative Study
... where data should be loaded. It also takes inputs from one or more datafiles, which contain data to be loaded into the database. Output from SQL*Loader for a load session is a table where data is loaded, a log file, and a bad file (with details of bad formatted records) or discard file (with details ...
... where data should be loaded. It also takes inputs from one or more datafiles, which contain data to be loaded into the database. Output from SQL*Loader for a load session is a table where data is loaded, a log file, and a bad file (with details of bad formatted records) or discard file (with details ...
Database Concepts - Information Systems
... • The purpose of a database is to help people and organizations track things of interest to them • A relational database stores data in tables, which have rows and columns (like a spreadsheet). A database typically has many different tables, where each table stores data about a different thing • Eac ...
... • The purpose of a database is to help people and organizations track things of interest to them • A relational database stores data in tables, which have rows and columns (like a spreadsheet). A database typically has many different tables, where each table stores data about a different thing • Eac ...
Lecture Notes - Department of Computer Science
... Don't search (Google) for solutions that aren't your own ...
... Don't search (Google) for solutions that aren't your own ...
High-Quality Code - Unit Testing
... Provides a run-time infrastructure for managing SQL-based database data as .NET objects The relational ...
... Provides a run-time infrastructure for managing SQL-based database data as .NET objects The relational ...
Chapter>>6>>
... generate code (SQL statements and programming language code), they are sometimes known as code generation tools. Prototyping tools are often provided as part of a DBMS. The prototyping tools may feature wizards to aid a developer in quickly creating applications that can be tested by users. 38. Shou ...
... generate code (SQL statements and programming language code), they are sometimes known as code generation tools. Prototyping tools are often provided as part of a DBMS. The prototyping tools may feature wizards to aid a developer in quickly creating applications that can be tested by users. 38. Shou ...
Transparency 2 : Relational Databases
... relationship, as with the children of an employee (assuming only one parent is an employee). By "many-to-many" we mean that an employee may have several skills, and a skill may belong to several employees. Under fourth normal form, a record type should not contain two or more independent multivalued ...
... relationship, as with the children of an employee (assuming only one parent is an employee). By "many-to-many" we mean that an employee may have several skills, and a skill may belong to several employees. Under fourth normal form, a record type should not contain two or more independent multivalued ...
Michał Kwiatek – CERN /IT-DES Performance Optimization and
... convert the key value into a database block address, thus bypassing all I/O except for the block read itself. Optimally, there will be one logical I/O used to perform a lookup. ...
... convert the key value into a database block address, thus bypassing all I/O except for the block read itself. Optimally, there will be one logical I/O used to perform a lookup. ...
Slide 1
... Database administrator, system developer, and end user: – A database administrator (DBA) is a person responsible for all the data resources of an organization Uses tools that come with a DBMS to improve the productivity and performance of database planning and design ...
... Database administrator, system developer, and end user: – A database administrator (DBA) is a person responsible for all the data resources of an organization Uses tools that come with a DBMS to improve the productivity and performance of database planning and design ...
Oracle Database
Oracle Database (commonly referred to as Oracle RDBMS or simply as Oracle) is an object-relational database management system produced and marketed by Oracle Corporation.Larry Ellison and his two friends and former co-workers, Bob Miner and Ed Oates, started a consultancy called Software Development Laboratories (SDL) in 1977. SDL developed the original version of the Oracle software. The name Oracle comes from the code-name of a CIA-funded project Ellison had worked on while previously employed by Ampex.