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|What is Rollback Segment?|
|A Database contains one or more Rollback Segments to temporarily store undo information.|
|What are the uses of Rollback Segment?|
|Rollback Segments are used: To generate read-consistent database information during database recovery to rollback uncommitted transactions for users.|
|What is a Temporary Segment?|
|Temporary segments are created by ORACLE when a SQL statement needs a temporary work area to complete execution. When the statement finishes execution, the temporary segment extents are released to the system for future use.|
|What is a Data File?|
|Every ORACLE database has one or more physical data files. A database's data files contain all the database data. The data of logical database structures such as tables and indexes is physically stored in the data files allocated for a database.|
|What are the Characteristics of Data Files?|
|A data file can be associated with only one database.Once created a data file can't change size.One or more data files form a logical unit of database storage called a tablespace.|
|What is a Redo Log?|
|The set of Redo Log files for a database is collectively known as the database's redo log.|
|What is the function of Redo Log?|
|The Primary function of the redo log is to record all changes made to data.|
|What is the use of Redo Log Information?|
|The Information in a redo log file is used only to recover the database from a system or media failure the prevents database data from being written to a database's data files.|
|What does a Control file Contain?|
A Control file records the physical structure of the database. It contains the following information Database Name ,Names and locations of a database's files ,redolog files and Time stamp of database creation.
|What is the use of Control File?|
|When an instance of an ORACLE database is started, its control file is used to identify the database and redo log files that must be opened for database operation to proceed. It is also used in database recovery.|
|What is a Data Dictionary?|
|The data dictionary of an ORACLE database is a set of tables and views that are used as a read-only reference about the database. It stores information about both the logical and physical structure of the database, the valid users of an ORACLE database, integrity constraints defined for tables in the database and space allocated for a schema object and how much of it is being used.|
Atmospheric pressure at sea level equals ?
|General Knowledge of India|
Which of the following dance forms was introduced by the great Vaishnava saint and reformer Mahapurusha Sankaradeva ?
Which of the following is the only classical dance of india having links with Muslim culture and represents a unique synthesis of Hindu and Muslim genius in art ?
|Time and Distance|
Starting from the same point at the same time, Ruhan and Yuvan had to reach the same destination. While Ruhan drove at 45 km/hr, Yuvan was slower by 5 km/hr. If Yuvan arrived at the destination an hour after Ruhan did, the distance covered by each, in Kilometres, was ?
A sum of money was invested at a certain rate of simple interest for 4 years. Had the sum been invested at a rate 3% higher than the actual rate, the interest earned would have been 720 Rs more. Find the sum initially invested?
|Ratio and Proportion|
A bag contains red, blue and black balls. The ratio of red to blue balls is 3 : 5. The ratio of black to red balls is 3 : 4. What is the ratio of blue to black balls?
|Profit and Loss|
Selling a pack of incense sticks for 136 Rs resulted in a loss of 15%. To make a profit of 10%, the selling price should be ?
23% of a bucket full of diluted milk was water. If the quantity of pure milk in the bucket was 15.4 liter, then the capacity of the bucket was ?
The average of the marks obtained by three girls in a test was twice the average of the marks obtained by eight boys in that test. If the total marks obtained by all these examinees was 168, find the average marks each of the girls obtained ?
|Pipes and Cistern|
44 pipes can fill a large water tank in 27 hours. How many hours it take for 66 pipes to fill four such tanks ?
|HCF and LCM|
A natural number, when divided by 3, 4, 5, 6, and 7 respectively, leaves corresponding remainder of 2, 3, 4, 5 and 6. What is the smallest of all such numbers fulfilling the above condition ?
If in a certain code language, PRINT is written as 34825 and TRUE is written as 5479. Then, how will TENURE be written in that language?
Arrange the given words from smallest to biggest-
|Statement and Conclusion|
The difference between the place value of 4 and 2 in the number 833749502 is ?
GIKM : HJLN :: PRTV : .........?
In a row of girls, Nanda is eighth from the left and Chanda is nineteenth from right. When Nanda and Chanda interchange their positions, Chanda becomes twnty-third form right. How many girls are there in the row?
Summer: Day :: Winter : ........?
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