36
Q:

What is RDBMS? Explain its features. 

Answer:



Q:

A data warehouse is composed of

A) current data B) internal and external data sources
C) historical data from legacy systems D) historical & current data
 
Answer & Explanation Answer: C) historical data from legacy systems

Explanation:

A data warehouse is a relational database that is designed for query and analysis rather than transaction processing. It usually contains historical data that is derived from transaction data, but it can include data from other sources. Data warehouses are designed to help you analyze your data.

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0 92
Q:

Which of the following are elements of SQL?

A) base-table-identifier ::= user-defined-name B) base-table-name ::= base-table-identifier
C) boolean-primary ::= comparison-predicate D) All the above
 
Answer & Explanation Answer: D) All the above

Explanation:
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1 2207
Q:

What is the maximum number of Triggers can be applied in a table ?

A) 8 B) 9
C) 12 D) 14
 
Answer & Explanation Answer: C) 12

Explanation:

We can apply at max of 12 triggers in a table.

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Filed Under: Oracle - Technology
Job Role: Analyst , IT Trainer

1 2264
Q:

What are the advantages of LINQ ?

Answer

- Debugging is esy.
- Reduces Development Time.
- LINQ offers IntelliSense which means writing more accurate queries easily.

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Subject: Oracle - Technology
Job Role: Analyst , IT Trainer

2 2564
Q:

What is LINQ ?

Answer

LINQ stands for " Language Integrated Query " and it is pronounced as "LINK".
LINQ was introduced in with .NET framework 3.5 including VS2008. It enables you to query the data from various data source like SQL, XML document, ADO .NET data source, web services and any other objects such as Collection, Generics etc...

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Subject: Oracle - Technology

2 1405
Q:

What is DocumentDB ?

Answer

DocumentDB is a NoSQL document-oriented database and records saves in key-value pairs. It's same as the other NoSQL document-oriented such as MongoDB.

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Subject: Oracle - Technology
Job Role: Analyst , IT Trainer

1 2356
Q:

Can you explain how to insert an image in table in oracle?

Answer

Insert image into a table


Create the following table:


      create table pics_table (


      bfile_id number,


      bfile_desc varchar2(30),


      bfile_loc bfile,


      bfile_type varchar2(4))


      TABLESPACE appl_data


      storage (initial 1m next 1m pctincrease 0) 


Insert Query:


      INSERT INTO pics_table


      VALUES(4,'test image',bfilename('GIF_FILES','Test.JPG'),'JPEG'); 

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Subject: Oracle - Technology

1 2477
Q:

Difference between clustering and mirroring .

Answer

- Clustering means one than one database server configured for the same user connection. When users connect, one of the server’s responds and connects based on availability. The user is completely ignorant of the fact that there are more than one database servers. It demands high cost due to infrastructure needs. Clustering is hence done on server level.


- Mirroring means, one has many configured databases on the same server. Mirrors are basically copies of the original database. Mirroring is hence done on database level. 

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Subject: Oracle - Technology

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