Most answered questions in Database

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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 • 1,453 views
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1 answer

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 • 1,109 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 • 1,413 views
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1 answer

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 • 1,238 views
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1 answer

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 • 1,439 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 • 7,756 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 • 974 views
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1 answer

Locking or Transactions MongoDB

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

Jul 24, 2018 in Database by shams
 • 3,670 points • 1,606 views
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1 answer

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 • 1,291 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 • 2,226 views
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1 answer

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 • 1,994 views
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1 answer

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 • 1,150 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 • 1,396 views
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1 answer

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 • 4,378 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 • 1,096 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 • 1,850 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 • 2,682 views
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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 • 1,754 views
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1 answer

Python Stress Test

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

Jun 29, 2018 in Database by Data_Nerd
 • 2,390 points • 2,043 views
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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 • 1,090 views
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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 • 2,601 views
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DFS PUT Command gives error on Windows

When i run DFS PUT command on ...READ MORE

Jul 22, 2024 in Database by anonymous
edited Mar 4 • 228 views
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what kind of a nosql store is azure table storage

what kind of a nosql store is ...READ MORE

Dec 15, 2023 in Database by Priyanka
 • 4,380 points • 982 views
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Cannot connect to SQL server

cannot connect to SQL worked well before ...READ MORE

Nov 10, 2023 in Database by rakshatha
edited Mar 5 • 298 views
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Create a SQL enter script from an Excel worksheet

I have a large excel worksheet that ...READ MORE

Sep 8, 2023 in Database by Satyawrat
 • 460 points • 888 views
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MongoDB convert type of an element in array

In MongoDB, I have a object array ...READ MORE

Aug 7, 2023 in Database by Ramkumar
edited Mar 5 • 250 views
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0 answers

How to add crud operation in Laravel via ajax?

I have created a project in Laravel ...READ MORE

Jul 13, 2023 in Database by Muhammad
edited Mar 5 • 166 views
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How to create Login and Register in Laravel verify by OTP?

I want to create a project in ...READ MORE

Jul 13, 2023 in Database by Muhammad
edited Mar 5 • 422 views
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How to Extract Tally ODBC to Sales Register table Excel, items wise In SQL Statement

How to Extract Tally ODBC to Sales ...READ MORE

Jun 17, 2023 in Database by Arun
edited Mar 5 • 186 views
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How do I delete rows from two tables with ID in MySQLi using php?

I want to delete rows in two ...READ MORE

May 25, 2023 in Database by Hannes
edited Mar 5 • 177 views
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Select employee details of dept number 10 or 30

Dept Table:                     DeptNo Dname Loc 10 Accounts Bangalore 20 IT Delhi 30 Production Chennai 40 Sales Hyd 50 Admn London Emp ...READ MORE

Feb 12, 2023 in Database by Nischitha
edited Mar 4 • 176 views
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why this error ? ERROR Cannot add or update a child row a foreign key constraint fails

create table per( sl_no int UNIQUE NOT ...READ MORE

Dec 13, 2022 in Database by abc
edited Mar 4 • 188 views
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I am having a forbidden error response when I try to login to Docker Desktop on a Windows OS

I am new to docker and I ...READ MORE

Nov 30, 2022 in Database by Gustave
edited Mar 4 • 168 views
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Get json object values and store as arrays

[ ['david','female','john','e6a33eee180b07e563d74fee8c2c66b8',1,1,'roger63'], ...READ MORE

Nov 16, 2022 in Database by Ashwini
 • 5,430 points • 1,996 views
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Can PHP arrays hold items of different type?

The definition of an array in other ...READ MORE

Nov 16, 2022 in Database by Ashwini
 • 5,430 points • 1,134 views
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nsert into a table, data returned from reserved command

Hi, I want to insert in a table, ...READ MORE

Oct 18, 2022 in Database by Edvaldo
edited Mar 4 • 145 views
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Apache Hive - command Describle formatted table

About the describe formatted table command, is ...READ MORE

Oct 15, 2022 in Database by Edvaldo
edited Mar 4 • 143 views
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0 answers

Apache Hive - command Describle formatted table

About the describe formatted table command, is ...READ MORE

Oct 15, 2022 in Database by Edvaldo
edited Mar 4 • 137 views
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0 answers

Query comparing dates in SQL

I have a table containing dates for ...READ MORE

Sep 12, 2022 in Database by Kithuzzz
 • 38,000 points • 1,170 views
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Using If else in SQL Select statement

In my select statement, two columns will ...READ MORE

Sep 6, 2022 in Database by Kithuzzz
 • 38,000 points • 957 views
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How to concat two columns into one with the existing column name in mysql?

Using MySQL, I want to combine two ...READ MORE

Sep 6, 2022 in Database by Kithuzzz
 • 38,000 points • 965 views
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How to return only the Date from a SQL Server DateTime datatype

SELECT GETDATE() Returns: 2008-09-22 15:24:13.790 I want that date part ...READ MORE

Sep 6, 2022 in Database by Kithuzzz
 • 38,000 points • 777 views
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0 answers

SQL update query using joins

A value that is returned from a ...READ MORE

Sep 6, 2022 in Database by Kithuzzz
 • 38,000 points • 1,144 views
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0 answers

How to find server name of SQL Server Management Studio

Microsoft SQL Server 2008 is now installed. ...READ MORE

Sep 6, 2022 in Database by Kithuzzz
 • 38,000 points • 1,643 views
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SQL Server® 2016, 2017 and 2019 Express full download

Previous versions of SQL Server Express were ...READ MORE

Sep 6, 2022 in Database by Kithuzzz
 • 38,000 points • 1,155 views
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com.microsoft.sqlserver.jdbc.SQLServerDriver not found error

I'm having the same issue as this thread. ...READ MORE

Sep 6, 2022 in Database by Kithuzzz
 • 38,000 points • 1,014 views
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0 answers

Direct link for downloading Microsoft SQL Server 2008 R2 Express SP2 without clicking any button?

Do you know of a button-free direct ...READ MORE

Sep 6, 2022 in Database by Kithuzzz
 • 38,000 points • 813 views
0 votes
0 answers

How can I add the sqlite3 module to Python?

Can someone please explain how to install ...READ MORE

Sep 6, 2022 in Database by Kithuzzz
 • 38,000 points • 1,510 views
0 votes
0 answers

Use '=' or LIKE to compare strings in SQL?

There is a (nearly religious) debate over ...READ MORE

Sep 6, 2022 in Database by Kithuzzz
 • 38,000 points • 866 views
0 votes
0 answers

DB2 SQL error: SQLCODE: -206, SQLSTATE: 42703

I am getting this JDBC exception. I ...READ MORE

Sep 5, 2022 in Database by Kithuzzz
 • 38,000 points • 1,980 views
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