Most voted questions in Database

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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 • 1,235 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 • 1,136 views
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What is Proactive/Retroactive/Simultaneous Update

Proactive Update: The updates that are applied ...READ MORE

Aug 17, 2018 in Database by CodingByHeart77
 • 3,750 points • 4,167 views
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2 answers

Types of relationships in Database

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

Aug 17, 2018 in Database by zombie
 • 3,790 points • 3,241 views
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What is Data Redundancy?

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

Aug 17, 2018 in Database by Sahiti
 • 6,370 points • 1,458 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 • 1,570 views
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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
 • 8,250 points • 2,757 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 • 1,180 views
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2 answers

Database Lock and its types.

Hello Dataking99, A database lock is used to ...READ MORE

Apr 20, 2020 in Database by Niroj
 • 82,840 points • 18,977 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 • 699 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 • 1,274 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
 • 9,350 points • 954 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 • 1,221 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
 • 9,350 points
edited Jun 1, 2023 by Srinath • 1,038 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 • 1,291 views
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Filters in HBase

ColumnPrefixFilter: takes a single argument, a column ...READ MORE

Jul 31, 2018 in Database by kurt_cobain
 • 9,350 points • 7,493 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 • 813 views
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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 • 1,425 views
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Why is MongoDB preferred?

MongoDB is considered to be best NoSQL ...READ MORE

Jul 24, 2018 in Database by shams
 • 3,670 points
edited Jun 1, 2023 by Srinath • 1,130 views
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1 answer

Delete row in HBase

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

Jul 24, 2018 in Database by kurt_cobain
 • 9,350 points • 2,010 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 • 1,822 views
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Using Real Time flume Data for Analysis

By using MorphlineSolrSink we can extract, transform ...READ MORE

Jul 17, 2018 in Database by kurt_cobain
 • 9,350 points • 984 views
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1 answer

Data model operations in Hbase

1. Get(returns attributes for a specified row, Gets ...READ MORE

Jul 16, 2018 in Database by Data_Nerd
 • 2,390 points • 1,206 views
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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
 • 2,390 points • 4,165 views
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Connection in Hbase

Following code is used to open a ...READ MORE

Jul 11, 2018 in Database by Data_Nerd
 • 2,390 points • 936 views
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Standalone Mode in Hbase

It is a default mode of HBase. ...READ MORE

Jul 11, 2018 in Database by kurt_cobain
 • 9,350 points • 1,652 views
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1 answer

Table design approach Hbase

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

Jul 10, 2018 in Database by Data_Nerd
 • 2,390 points • 2,459 views
0 votes
1 answer

What is MSLAB and LZO?

MSLAB stands for Memstore-Local Allocation Buffer. Lempel-Ziv-Oberhumer (LZO) ...READ MORE

Jul 10, 2018 in Database by Data_Nerd
 • 2,390 points • 1,582 views
0 votes
2 answers

Durable Writes in Cassandra

When Cassandra write: 1. memtable (in memory) 2. commit ...READ MORE

Nov 25, 2018 in Database by Amit
 • 180 points • 7,703 views
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Python Stress Test

Cassandra comes with a popular utility called ...READ MORE

Jun 29, 2018 in Database by Data_Nerd
 • 2,390 points • 1,889 views
0 votes
1 answer

Logging Levels in Cassandra

ALL: All levels including custom levels TRACE: Designates finer-grained informational ...READ MORE

Jun 28, 2018 in Database by shams
 • 3,670 points • 890 views
0 votes
1 answer

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 • 2,402 views
–1 vote
1 answer

How to add prefix in excel ?

Using the Concatenate Function in Excel, you ...READ MORE

Apr 6, 2022 in Database by gaurav
 • 23,260 points • 84,715 views
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