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|What are the components of Physical database structure of Oracle Database?|
|ORACLE database is comprised of three types of files. One or more Data files, two are more Redo Log files, and one or more Control files.|
|What are the components of Logical database structure of ORACLE database?|
|Tablespaces and the Database's Schema Objects.|
|What is a Tablespace?|
|A database is divided into Logical Storage Unit called tablespaces. A tablespace is used to grouped related logical structures together.|
|What is SYSTEM tablespace and When is it Created?|
|Every ORACLE database contains a tablespace named SYSTEM, which is automatically created when the database is created. The SYSTEM tablespace always contains the data dictionary tables for the entire database. Explain the relationship among Database, Tablespace and Data file. Each databases logically divided into one or more tablespaces One or more data files are explicitly created for each tablespace.|
|What is schema?|
|A schema is collection of database objects of a User.|
|What are Schema Objects ?|
|Schema objects are the logical structures that directly refer to the database's data. Schema objects include tables,views,sequences,synonyms, indexes, clusters, database triggers, procedures, functions packages and database links.|
|Can objects of the same Schema reside in different tablespaces.?|
|Can a Tablespace hold objects from different Schemes ?|
|What is Data Block?|
|ORACLE database's data is stored in data blocks. One data block corresponds to a specific number of bytes of physical database space on disk.|
|How to define Data Block size?|
|A data block size is specified for each ORACLE database when the database is created. A database users and allocated free database space in ORACLE datablocks. Block size is specified in INIT.ORA file and cann't be changed latter.|
|What is Row Chaining?|
|In Circumstances, all of the data for a row in a table may not be able to fit in the same data block. When this occurs, the data for the row is stored in a chain of data block (one or more) reserved for that segment.|
|What is an Extent?|
|An Extent is a specific number of contiguous data blocks, obtained in a single allocation, used to store a specific type of information.|
|What is a Segment?|
|A segment is a set of extents allocated for a certain logical structure.|
|What are the different types of Segments?|
|Data Segment, Index Segment, Rollback Segment and Temporary Segment.|
|What is a Data Segment?|
|Each Non-clustered table has a data segment. All of the table's data is stored in the extents of its data segment. Each cluster has a data segment. The data of every table in the cluster is stored in the cluster's data segment.|
|What is an Index Segment?|
|Each Index has an Index segment that stores all of its data.|
|General Knowledge of India|
How many coastal state are in India?
A person is to count 4500 currency notes. Let an denote the number of notes he counts in the nth minute. If a1 = a2 = .... = a10 = 150 and a10 , a11 ,... are in an AP with common difference – 2, then the time taken by him to count all notes is ?
The value of product 6 1/2 * 6 1/4 * 6 1/8 * 6 1/16 * -----∞ upto infinite terms?
What is nohup command in unix?
How do display the 10th, 11th and 12th line of a file in Unix?
The mean of 100 students marks was found to be 40. it was found later that a mark 53 was read as 83. the correct mean is?
The geometric mean of three observations 40, 50 and X is 10, then the value of X is ?
Who appoints the members of National human rights commission?
The President of India can resign by writing under his hand addressed to?
Under which article of the constitution of India can the President of India refer a matter to the Supreme Court for its opinion?
|General Computer Knowledge|
The term VPN stands for ?
The transmission control protocol(TCP) is a............ layer protocol ?
What is the difference between Procedure and Function?
Define exception and How will you raise an exception in PL/SQL procedure?
What is the advantage of using packages for storing PL/SQL objects?
|Fill in the blank|
I ________ station before the train arrived.
If I ______ a king, I would help everyone.
Radha___________her daughter for an hour.
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