The use of comparison operators like <,> or = can be done in a subquery. These kinds ofSQL Interview Questionsare a bit difficult to understand and answer accordingly. There are a lot ofSQL Interview Questionsapart from this, which the candidates must practice qualifying for the interview. Fo...
To help, I am providing a guide on PL/SQL interview questions. I will begin with the fundamental concepts and move forward to more advanced topics like bulk processing, dynamic SQL, and performance tuning. If you want to understand the foundational concepts of the Oracle database, I recommend...
SQL*Loader is a product for moving data in external files into tables in an Oracle database. To load data from external files into an Oracle database, two types of input must be provided to SQL*Loader : the data itself and the control file. The control file describes the data to be ...
The above cursor is implicit cursor where all the operations are defined by oracle engine internally like declaring the cursor,fetching values from the cursor and close cursor. Explicit Cursor : Explicit cursor is a cursor which is defined by user to process set of records.For multiple records u...
Softwaretesting-QuestionsandAnswers-SQLInterviewQuestions Q.WhatdoesSQLstandfor? A.StructuredQueryLanguage Q.Whatisaprimarykey? A.Primarykey:EachrowofthedatainatableuniquelyidentifiedbyaPrimaryKey Thecolumn(columns)thathascompletelyuniquedatathroughoutthetableis ...
(Mostly asked in Interview Questions For SQL) Answer: There are following types of indexes used while Indexing in SQL: 1.Normal index 2.Unique Index 3.Bit Map Index 4.Composite Index 5.B-Tree Index(Oracle considered Normal indexes as B-Tree Indexes) 6.Function Based Index 7.Clustered ...
Remember ISDATE()is an MSSQL function and it may not work on Oracle, MySQL or any other database but there would be something similar.SELECT ISDATE('1/08/13') AS "MM/DD/YY";It will return 0 because passed date is not in correct format....
A few popular examples are MySQL, PostgreSQL, Microsoft Access, SQL Server, FileMaker, and Oracle. 3. What is Object-Relational Mapping? Object-Relational Mapping (ORM)is a tool that lets you query and manipulates data from a database using an object-oriented programming language such as Java...
Oracle has an OLE-DB provider that Microsoft provides to add it as a linked server to the SQL Server group.Day09 What is BCP? When is it used? BCP (BulkCopy) is a tool used to copy huge amount of data from tables and views. It does not copy the complete structure from source to...
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