Trending questions in Database

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What is a covered Index?

A covering index is an index that contains all ...READ MORE

Oct 10, 2018 in Database by Frankie
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Clause in SQL

SQL clause helps to limit the result ...READ MORE

Oct 8, 2018 in Database by DataKing99
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Types of relationships in Database

There are 3 types of relationships in ...READ MORE

Aug 17, 2018 in Database by zombie
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Collation in Database

Collation is defined as a set of ...READ MORE

Oct 9, 2018 in Database by DataKing99
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Ways to improve query performance using Index hunting

Index hunting help in improving query performance ...READ MORE

Aug 29, 2018 in Database by CodingByHeart77
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How do I enable Oracle automatically on systemboot?

To enable the database service to start ...READ MORE

Oct 5, 2018 in Database by Frankie
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What is checkpoint in Database?

Checkpoint declares a point before which all ...READ MORE

Sep 4, 2018 in Database by Sahiti
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Difference between Inner Join & Outer Join

The difference is as follows: INNER JOIN: Returns all those ...READ MORE

Sep 7, 2018 in Database by DataKing99
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HLog and WAL in Hbase.

All edits in the HStore are stored ...READ MORE

Jul 16, 2018 in Database by Data_Nerd
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Debugging tools: PIG

explain utility is helpful for Hadoop developers ...READ MORE

Sep 12, 2018 in Database by kurt_cobain
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Auto Increment in SQL

Auto increment keyword allows the user to ...READ MORE

Sep 28, 2018 in Database by DataKing99
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DELETE vs TRUNCATE vs DROP command

After the execution of ‘DELETE’ operation, COMMIT ...READ MORE

Aug 23, 2018 in Database by CodingByHeart77
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When is the functional dependency known as fully functional dependency?

The criteria of fully functional dependency, is ...READ MORE

Aug 10, 2018 in Database by DataKing99
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Why is not preferable to use mysql_* functions in PHP?

The reasons are as follows: The MySQL extension: Does ...READ MORE

Sep 7, 2018 in Database by DataKing99
 • 8,250 points • 1,294 views
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Hcatalog in HIVE

HCatalog supports reading and writing files in ...READ MORE

Aug 30, 2018 in Database by kurt_cobain
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What are stored procedures in database?

A stored procedure is a collection of ...READ MORE

Sep 6, 2018 in Database by CodingByHeart77
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Types of tables in MySQL

MyISAM is the default table that is ...READ MORE

Aug 21, 2018 in Database by CodingByHeart77
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Is SELECT * harmful in Database?

There are really three major reasons: Inefficiency in ...READ MORE

Sep 7, 2018 in Database by DataKing99
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Can different databases use different name quotes?

This use of quotes is called delimited ...READ MORE

Sep 11, 2018 in Database by CodingByHeart77
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What are stored procedures?

The stored procedure is a collection of ...READ MORE

Aug 23, 2018 in Database by CodingByHeart77
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Common Hive Services

The following are commonly used services of ...READ MORE

Aug 30, 2018 in Database by kurt_cobain
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Buckets in HIVE

There are two main reasons for performing bucketing ...READ MORE

Aug 30, 2018 in Database by kurt_cobain
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Explain Data Dictionary

Data dictionary is a set of information ...READ MORE

Aug 30, 2018 in Database by CodingByHeart77
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Fragmentation in Database

Fragmentation is a feature which controls the ...READ MORE

Sep 4, 2018 in Database by Sahiti
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components of Hbase

Apache HBase Consists of the following main ...READ MORE

Aug 28, 2018 in Database by kurt_cobain
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Tunable Consistencies in Cassandra

Tunable Consistency is a phenomenal characteristic that ...READ MORE

Aug 21, 2018 in Database by kurt_cobain
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Management Tools in Cassandra

DataStaxOpsCenter: internet-based management and monitoring solution for ...READ MORE

Aug 21, 2018 in Database by kurt_cobain
 • 9,350 points • 1,088 views
0 votes
1 answer

What is Data Redundancy?

Duplication of data in the database is ...READ MORE

Aug 17, 2018 in Database by Sahiti
 • 6,370 points • 1,260 views
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External and Managed Table : HIVE

The metadata information along with the table ...READ MORE

Aug 30, 2018 in Database by kurt_cobain
 • 9,350 points • 664 views
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Secondary index in Cassandra

Secondary indexes are indexes built over column ...READ MORE

Aug 21, 2018 in Database by kurt_cobain
 • 9,350 points • 998 views
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Indexes in Database

The index is a data structure that ...READ MORE

Aug 20, 2018 in Database by DataKing99
 • 8,250 points • 1,050 views
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Cassandra Data Model

Cassandra Data Model consists of four main ...READ MORE

Aug 21, 2018 in Database by kurt_cobain
 • 9,350 points • 897 views
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2 answers

SQL vs NoSQL

Well, it depends on what you are ...READ MORE

Aug 11, 2018 in Database by slayer
 • 29,370 points • 1,237 views
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What is schema?

The description of a database is called ...READ MORE

Aug 17, 2018 in Database by CodingByHeart77
 • 3,750 points • 869 views
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TRIGGERS used in MySQL tables

The following TRIGGERS are allowed in MySQL:  BEFORE ...READ MORE

Aug 21, 2018 in Database by CodingByHeart77
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Delete row in HBase

In Hbase, whatever you write will be ...READ MORE

Jul 24, 2018 in Database by kurt_cobain
 • 9,350 points • 1,813 views
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Modify schema in HBase using Programs

HBase schemas can be created or updated ...READ MORE

Aug 9, 2018 in Database by kurt_cobain
 • 9,350 points • 1,093 views
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Clustered vs Non-clustered Indexes

Clustered indexes - The indexes according to ...READ MORE

Aug 20, 2018 in Database by DataKing99
 • 8,250 points • 591 views
+1 vote
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Cursor and Its Types

The cursor is a temporary work area ...READ MORE

Aug 9, 2018 in Database by CodingByHeart77
 • 3,750 points • 993 views
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What is Functional dependency?

A relation is said to be in ...READ MORE

Aug 10, 2018 in Database by DataKing99
 • 8,250 points • 901 views
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Thrift in Hbase

Apache Thrift is written in C++ but ...READ MORE

Aug 9, 2018 in Database by kurt_cobain
 • 9,350 points • 943 views
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Key Components of HBase

Zookeeper: It does the co-ordination work between client ...READ MORE

Jul 24, 2018 in Database by kurt_cobain
 • 9,350 points • 1,592 views
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Connection Mongos check - MongoDB

The following command needs to be used ...READ MORE

Aug 3, 2018 in Database by kurt_cobain
 • 9,350 points
edited Jun 1, 2023 by Srinath • 1,103 views
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Access HFile without using Hbase

Yes, it's very much possible to access ...READ MORE

Aug 9, 2018 in Database by kurt_cobain
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Table design approach Hbase

Tall-Narrow and Flat-Wide are the two HBase ...READ MORE

Jul 10, 2018 in Database by Data_Nerd
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Locking or Transactions MongoDB

MongoDB does not use conventional locking with ...READ MORE

Jul 24, 2018 in Database by shams
 • 3,670 points • 1,253 views
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Data Models operations HBase

Put Method – To store data in ...READ MORE

Aug 9, 2018 in Database by kurt_cobain
 • 9,350 points • 540 views
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Failure of moveChunks - MongoDB

No, chunk moves are consistent and deterministic. ...READ MORE

Aug 3, 2018 in Database by kurt_cobain
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edited Jun 1, 2023 by Srinath • 770 views
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Database Repair Options in Cassandra

Anti Entropy: Anti-entropy Repair is a process of ...READ MORE

Jun 28, 2018 in Database by kurt_cobain
 • 9,350 points • 2,169 views
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Compaction HBase

Compaction is a process which is used ...READ MORE

Jul 31, 2018 in Database by kurt_cobain
 • 9,350 points • 633 views
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