Trending questions in Database

0 votes
1 answer

What is a covered Index?

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

Oct 10, 2018 in Database by Frankie
 • 9,830 points • 826 views
0 votes
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 • 2,960 views
0 votes
1 answer

Clause in SQL

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

Oct 8, 2018 in Database by DataKing99
 • 8,250 points • 716 views
0 votes
1 answer

Collation in Database

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

Oct 9, 2018 in Database by DataKing99
 • 8,250 points • 649 views
0 votes
1 answer

Ways to improve query performance using Index hunting

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

Aug 29, 2018 in Database by CodingByHeart77
 • 3,750 points • 2,364 views
0 votes
1 answer

How do I enable Oracle automatically on systemboot?

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

Oct 5, 2018 in Database by Frankie
 • 9,830 points • 771 views
0 votes
1 answer

What is checkpoint in Database?

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

Sep 4, 2018 in Database by Sahiti
 • 6,370 points • 1,868 views
0 votes
1 answer

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
 • 8,250 points • 1,699 views
0 votes
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 • 3,958 views
0 votes
1 answer

Debugging tools: PIG

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

Sep 12, 2018 in Database by kurt_cobain
 • 9,350 points • 1,345 views
0 votes
1 answer

Auto Increment in SQL

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

Sep 28, 2018 in Database by DataKing99
 • 8,250 points • 593 views
+1 vote
1 answer

DELETE vs TRUNCATE vs DROP command

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

Aug 23, 2018 in Database by CodingByHeart77
 • 3,750 points • 2,031 views
0 votes
1 answer

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 • 2,578 views
0 votes
1 answer

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
0 votes
1 answer

Hcatalog in HIVE

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

Aug 30, 2018 in Database by kurt_cobain
 • 9,350 points • 1,565 views
0 votes
1 answer

What are stored procedures in database?

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

Sep 6, 2018 in Database by CodingByHeart77
 • 3,750 points • 1,124 views
0 votes
1 answer

Types of tables in MySQL

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

Aug 21, 2018 in Database by CodingByHeart77
 • 3,750 points • 1,651 views
0 votes
1 answer

Is SELECT * harmful in Database?

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

Sep 7, 2018 in Database by DataKing99
 • 8,250 points • 885 views
0 votes
1 answer

Can different databases use different name quotes?

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

Sep 11, 2018 in Database by CodingByHeart77
 • 3,750 points • 670 views
0 votes
1 answer

What are stored procedures?

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

Aug 23, 2018 in Database by CodingByHeart77
 • 3,750 points • 1,386 views
0 votes
1 answer

Common Hive Services

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

Aug 30, 2018 in Database by kurt_cobain
 • 9,350 points • 1,002 views
0 votes
1 answer

Buckets in HIVE

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

Aug 30, 2018 in Database by kurt_cobain
 • 9,350 points • 844 views
0 votes
1 answer

Explain Data Dictionary

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

Aug 30, 2018 in Database by CodingByHeart77
 • 3,750 points • 835 views
0 votes
1 answer

Fragmentation in Database

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

Sep 4, 2018 in Database by Sahiti
 • 6,370 points • 584 views
0 votes
1 answer

Tunable Consistencies in Cassandra

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

Aug 21, 2018 in Database by kurt_cobain
 • 9,350 points • 1,109 views
0 votes
1 answer

components of Hbase

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

Aug 28, 2018 in Database by kurt_cobain
 • 9,350 points • 848 views
0 votes
1 answer

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 • 1,089 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
0 votes
1 answer

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
0 votes
1 answer

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
0 votes
1 answer

Indexes in Database

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

Aug 20, 2018 in Database by DataKing99
 • 8,250 points • 1,051 views
0 votes
1 answer

Cassandra Data Model

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

Aug 21, 2018 in Database by kurt_cobain
 • 9,350 points • 898 views
0 votes
2 answers

SQL vs NoSQL

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

Aug 11, 2018 in Database by slayer
 • 29,370 points • 1,238 views
0 votes
1 answer

What is schema?

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

Aug 17, 2018 in Database by CodingByHeart77
 • 3,750 points • 870 views
0 votes
1 answer

TRIGGERS used in MySQL tables

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

Aug 21, 2018 in Database by CodingByHeart77
 • 3,750 points • 626 views
0 votes
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 • 1,813 views
0 votes
1 answer

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
0 votes
1 answer

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
1 answer

Cursor and Its Types

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

Aug 9, 2018 in Database by CodingByHeart77
 • 3,750 points • 995 views
0 votes
1 answer

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
0 votes
1 answer

Thrift in Hbase

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

Aug 9, 2018 in Database by kurt_cobain
 • 9,350 points • 944 views
0 votes
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 • 1,593 views
0 votes
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 • 1,103 views
0 votes
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 • 772 views
0 votes
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 • 2,046 views
0 votes
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 • 1,253 views
0 votes
1 answer

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
0 votes
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 • 770 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 • 2,173 views
0 votes
1 answer

Compaction HBase

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

Jul 31, 2018 in Database by kurt_cobain
 • 9,350 points • 635 views
Page:

Most popular tags

"PMP®","PMI®", "PMI-ACP®" and "PMBOK®" are registered marks of the Project Management Institute, Inc. MongoDB®, Mongo and the leaf logo are the registered trademarks of MongoDB, Inc.