Oracle Database 11g: The Complete Reference. Kevin Loney. New York Chicago San Francisco. Lisbon London Madrid Mexico City Milan. New Delhi San. Oracle Database Reference, 11g Release 2 (). E Copyright © , , Oracle and/or its affiliates. All rights reserved. Primary Author: Bert Rich. Oracle Database Concepts, 11g Release 2 (). E Copyright © , , Oracle and/or its affiliates. All rights reserved. Primary Authors: Lance.
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Oracle Database 11g The Complete Reference (Oracle Press): Computer Science Books @ grosanhugreza.ga Read books online. Ebook viewer. Oracle Database 10g: The Complete Reference. Kevin Loney. McGraw-Hill/ Osborne. New York Chicago San Francisco. Lisbon London Madrid Mexico City.
What is the use of NVL function? NVL Value, replace value How do we get field detail of a table? An alert is a window which appears in the center of the screen and overlays a portion of the current play.
What is the fastest query method to fetch data from the table? What is the parameter mode that can be passed to a procedure? Hash Cluster is a technique used for storing the table to make it faster to retrieve.
It order to retrieve the rows from the table, apply the hash value on the table. What are SET operators? SET operators are used with two or more queries. The operators are Union, Union All, intersect and Minus.
What is a view?
Tempfiles: These special datafiles serve exclusively for temporary storage data used for example during large sorts or for global temporary tables Control files, necessary for database startup. Oracle Corporation defines a control file as "[a] binary file that records the physical structure of a database and contains the names and locations of redo log files, the time stamp of the database creation, the current log sequence number, checkpoint information, and so on".
Data files can occupy pre-allocated space in the file system of a computer server, use raw disk directly, or exist within ASM logical volumes. After the installation process sets up sample tables, the user logs into the database with the username scott and the password tiger. Other default schemas   include: SYS essential core database structures and utilities SYSTEM additional core database structures and utilities, and privileged account OUTLN used to store metadata for stored outlines for stable query-optimizer execution plans.
The information in the SGA consists of the following elements, each of which has a fixed size, established at instance startup: Datafiles Every Oracle database has one or more physical datafiles, which contain all the database data.
The data of logical database structures, such as tables and indexes, is physically stored in the datafiles allocated for a database. Datafiles have the following characteristics: One or more datafiles form a logical unit of database storage called a tablespace.
A datafile can be associated with only one tablespace. Datafiles can be defined to extend automatically when they are full.
Data in a datafile is read, as needed, during normal database operation and stored in the memory cache of Oracle Database. For example, if a user wants to access some data in a table of a database, and if the requested information is not already in the memory cache for the database, then it is read from the appropriate datafiles and stored in memory.
Modified or new data is not necessarily written to a datafile immediately. To reduce the amount of disk access and to increase performance, data is pooled in memory and written to the appropriate datafiles all at once. The instance writes redo log buffers to the redo log as quickly and efficiently as possible.
The redo log aids in instance recovery in the event of a system failure. Install Oracle Database 11 g or upgrade from an earlier version Create database tables, sequences, indexes, views, and user accounts. Read more Read less. Customers who viewed this item also viewed. Page 1 of 1 Start over Page 1 of 1. Bob Bryla. Database Systems: Carlos Coronel. Python for Everyone. Cay S.
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