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Oracle Interview Book 2018 Top Study Materials

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Candidates can get Best Oracle Interview Books 2018  Best List of Books for Candidates can get Best Oracle Interview Book by Ivan Bayross, by Rick Riordan, by Michael Mclaughlin, by P.S. Deshpande, by McLaughlin, by Farooq, by Bob Bryla and Kevin Loney, by Kevin Loney, by Sam R. Alapati, by Ashima Mittal.

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Description

Candidates can get Best Oracle Interview Books 2018 also a Top List of Main Study Materials for 2017-2018 Oracle exam in India.

  • SQL, PL/SQL the Programming Language of Oracle
    by Ivan Bayross
  • The Hidden Oracle: The Trials of Apollo – Book 1
    by Rick Riordan
  • Oracle Database 11g PL/SQL Programming
    by Michael Mclaughlin
  • SQL & PL/SQL for Oracle 11g Black Book
    by P.S. Deshpande
  • Oracle Database 12c PL/SQL Programming
    by McLaughlin
  • Oracle Exadata expert’s Handbook 1ed
    by Farooq
  • Oracle Database 11g DBA Handbook
    by Bob Bryla and Kevin Loney
  • Oracle Database 11g The Complete Reference
    by Kevin Loney
  • Oracle WebLogic Server 12c: Administration Handbook
    by Sam R. Alapati
  • Oracle DBA Interview Questions (MISL-DT)
    by Ashima Mittal

About Oracle

  • Oracle Corporation is a multinational computer technology corporation based in Redwood Shores, California in USA. Its main areas of specialization include developing and marketing database software and technology, enterprise software products and cloud engineered systems. Oracle was second to Microsoft in terms of the highest revenue generation by a software making company in 2015. The company equally designs and develops tools used in database development and middle-tier software systems, enterprise resource planning (ERP) software, software for supply chain management (SCM), and software for customer relationship management (CRM).

How to Prepare Oracle Interview

  • Are you preparing to attend an Oracle interview soon? Here are a few questions and answers you may find interesting.
  1. What is RAW data type?

Ans. RAW data type is used in storing values in binary data format. The maximum size of a RAW in a table is 32767 bytes.

  1. What is BLOB data type?

Ans. A BLOB data type is a binary string with a varying length which is used in storing two gigabytes memory. Length should be stated in Bytes for BLOB

  1. What is NULL value in Oracle?

Ans. NULL value represents unknown or missing data. It is used as a place holder or represented as a default entry indicating that no actual data is present.

  1. What is WITH CHECK OPTION?

Ans. The WITH CHECK option clause specifies the level of check to be done in DML statements. It aids in preventing changes to a view that would produce results not contained in the sub query.

  1. What is the difference between varchar and varchar2 data types?

Ans. Varchar can store up to 2000 bytes and varchar2 can store up to 4000 bytes. While Varchar will occupy space for NULL value, Varchar2 will not occupy any space. They are differentiated by space.

  1. What is the use of NVL function?

Ans. The NVL function is used for replacing NULL values with given or another value. E.g.  NVL(Value, replace value)

  1. How do we get field detail of a table?

Ans. To get the field of a specified table use, Describe <Table_Name>

  1. What is an ALERT?

Ans. An alert is a window which appears in the center of the screen and overlays a portion of the current play.

  1. What is the fastest query method to fetch data from the table?

Ans.  You can use ROWID to fetch Row from the table. The use of ROW ID is the fastest query method for fetching data from the table.

  1. What is the parameter mode that can be passed to a procedure?

Ans. The parameter modes that can be passed to a procedure are IN, OUT and INOUT

  1. What is hash cluster?

Ans. 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.

  1. What are SET operators?

Ans. SET operators are used with two or more queries. The operators are Union, Union All, intersect and Minus.

What is a view ?

  • View is a logical table that is based on one or more tables and views. The tables which the view is based upon are called Base Tables and it contains no data.

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