Managing Objects with Data Dictionary Views
... User tables are tables created by the user and contain business data, such as EMPLOYEES. There is another collection of tables and views in the Oracle database known as the data dictionary. This collection is created and maintained by the Oracle server and contains information about the database. Th ...
... User tables are tables created by the user and contain business data, such as EMPLOYEES. There is another collection of tables and views in the Oracle database known as the data dictionary. This collection is created and maintained by the Oracle server and contains information about the database. Th ...
R - METU Computer Engineering
... – Property: once a row of X has been output by P1, it need not be output again (but C may have to be processed several times in P2 for successive portions of X) – Advantage: none of the intermediate relations (X, Y) have to be completely materialized and saved on disk. • Important if one such relati ...
... – Property: once a row of X has been output by P1, it need not be output again (but C may have to be processed several times in P2 for successive portions of X) – Advantage: none of the intermediate relations (X, Y) have to be completely materialized and saved on disk. • Important if one such relati ...
Introducing Microsoft SQL Server 2016
... SQL Server 2016 introduces three new principal security features—Always Encrypted, Row-Level Security, and dynamic data masking. While all these features are security related, each provides a different level of data protection within this latest version of the database platform. Throughout this chap ...
... SQL Server 2016 introduces three new principal security features—Always Encrypted, Row-Level Security, and dynamic data masking. While all these features are security related, each provides a different level of data protection within this latest version of the database platform. Throughout this chap ...
Upgrading SQL Server 2000
... • It accomplishes this in two different ways. • The first method is through the use of version switching, and the second method is through the use of multiple instances. Through the use of these two methods, SQL Server 6.5, SQL Server 7.0, and SQL Server 2000 can coexist on the same computer, althou ...
... • It accomplishes this in two different ways. • The first method is through the use of version switching, and the second method is through the use of multiple instances. Through the use of these two methods, SQL Server 6.5, SQL Server 7.0, and SQL Server 2000 can coexist on the same computer, althou ...
Computer Networks
... • Need to Update all Nulls with Actual Values • What if DB is Large? • Potential to Introduce Data Inconsistencies ...
... • Need to Update all Nulls with Actual Values • What if DB is Large? • Potential to Introduce Data Inconsistencies ...
System Administration Basics
... RMAN> configure retention policy to recovery window of 2 days; RMAN> configure controlfile autobackup on; RMAN> configure controlfile autobackup format for device type disk to '/DB-backups/sysbkups/%F'; RMAN> configure channel 1 device type disk format '/DB-backups/sysbkups/b_%u_%p_%c'; ...
... RMAN> configure retention policy to recovery window of 2 days; RMAN> configure controlfile autobackup on; RMAN> configure controlfile autobackup format for device type disk to '/DB-backups/sysbkups/%F'; RMAN> configure channel 1 device type disk format '/DB-backups/sysbkups/b_%u_%p_%c'; ...
Oracle PL/SQL - Gunadarma University
... Procedures are explicitly executed by a user or application Triggers are implicitly executed (fired) when the triggering event occurs Triggers should not be used as a lazy way to invoke a procedure as they are fired every time the event occurs ...
... Procedures are explicitly executed by a user or application Triggers are implicitly executed (fired) when the triggering event occurs Triggers should not be used as a lazy way to invoke a procedure as they are fired every time the event occurs ...
Chapter 9 - BZU PAGES
... Support provided by CASE tools include: - data dictionary to store information about database system’s data; - design tools to support data analysis; - tools to permit development of corporate data model, and conceptual and logical data models; - tools to enable prototyping of applications. ...
... Support provided by CASE tools include: - data dictionary to store information about database system’s data; - design tools to support data analysis; - tools to permit development of corporate data model, and conceptual and logical data models; - tools to enable prototyping of applications. ...
Database System Concepts, 6th Ed
... But very large scale implementations running on clusters with 10^3 to 10^4 machines are more recent ...
... But very large scale implementations running on clusters with 10^3 to 10^4 machines are more recent ...
branch-name
... average account balance is greater than $1200. select branch-name, avg-balance from (select branch-name, avg (balance) from account group by branch-name) as result (branch-name, avg-balance) where avg-balance > 1200 Note that we do not need to use the having clause, since we compute the temporary (v ...
... average account balance is greater than $1200. select branch-name, avg-balance from (select branch-name, avg (balance) from account group by branch-name) as result (branch-name, avg-balance) where avg-balance > 1200 Note that we do not need to use the having clause, since we compute the temporary (v ...
Using SAS/ACCESS Software with PC Files and Databases
... and updating of records. Another feature of this engine that may be advantageous in some applications is its ability to randomly access records within the OBF file based on record number. In other words, if you are using the FSEDIT procedure and want to read observation 2045 the en,gine can calculat ...
... and updating of records. Another feature of this engine that may be advantageous in some applications is its ability to randomly access records within the OBF file based on record number. In other words, if you are using the FSEDIT procedure and want to read observation 2045 the en,gine can calculat ...
CSC 443 – Database Management Systems Data and Its Structure
... stored: tracks, cylinders, indices etc. • Early applications worked at this level – explicitly dealt with details. • Problem: Routines were hard-coded to deal with physical representation. – Changes to data structure difficult to make. – Application code becomes complex since it must deal with detai ...
... stored: tracks, cylinders, indices etc. • Early applications worked at this level – explicitly dealt with details. • Problem: Routines were hard-coded to deal with physical representation. – Changes to data structure difficult to make. – Application code becomes complex since it must deal with detai ...
An Oracle Instance
... SQL (pronounced SEQUEL) is the programming language that defines and manipulates the database. SQL databases are relational databases; this means simply that data is stored in a set of simple relations. A database can have one or more tables. And each table has columns and rows. A table that has an ...
... SQL (pronounced SEQUEL) is the programming language that defines and manipulates the database. SQL databases are relational databases; this means simply that data is stored in a set of simple relations. A database can have one or more tables. And each table has columns and rows. A table that has an ...
Evolution of Database Systems
... time-variant, and non-volatile collection of data in support of management’s decision-making process. I ...
... time-variant, and non-volatile collection of data in support of management’s decision-making process. I ...
R - delab-auth
... Making decisions about the placement of data and programs across the sites of a computer network as well as possibly designing the network itself. ...
... Making decisions about the placement of data and programs across the sites of a computer network as well as possibly designing the network itself. ...
Using Oracle GoldenGate 12c with SQL Server Databases
... against a database, and routes them for distribution. High-Speed, Low-Impact Data Capture The Capture module does not require any changes to be made to the source database or the application it supports. To maintain optimal performance, the Capture module employs a range of CDC techniques against th ...
... against a database, and routes them for distribution. High-Speed, Low-Impact Data Capture The Capture module does not require any changes to be made to the source database or the application it supports. To maintain optimal performance, the Capture module employs a range of CDC techniques against th ...
Database Backup and Recovery
... • A hot backup is performed while the database instance remains online, meaning that concurrent access is possible. • Depending on the capabilities of the DBMS you are using, hot backups can be problematic because: – They can be more complex to implement. – They can cause additional overhead in the ...
... • A hot backup is performed while the database instance remains online, meaning that concurrent access is possible. • Depending on the capabilities of the DBMS you are using, hot backups can be problematic because: – They can be more complex to implement. – They can cause additional overhead in the ...
Transaction Management and Concurrency Control
... aborted and the database is restored to a previous consistent state 3. The end of the program is successfully reached – equivalent to a COMMIT 4. The program abnormally terminates and a ...
... aborted and the database is restored to a previous consistent state 3. The end of the program is successfully reached – equivalent to a COMMIT 4. The program abnormally terminates and a ...
No Slide Title
... Managing XML Schemas and documents in the database – Substitution groups Instance data is stored in a column/table corresponding to the head element. Additional information includes the actual element type. Also includes, namespace prefixes, comments, PIs. ...
... Managing XML Schemas and documents in the database – Substitution groups Instance data is stored in a column/table corresponding to the head element. Additional information includes the actual element type. Also includes, namespace prefixes, comments, PIs. ...