Why we use Relation keyword in pig?

0 votes

Hi,

I am working in pig and was working with all the commands and operators but could not understand what Relation keyword does. Can anyone explain this term?

May 7, 2019 in Big Data Hadoop by diana
35 views

1 answer to this question.

0 votes

Hey,

In pig, Relation represents a complete database. A Relation is a bag or we can say a relation is a bag of tuples. As compared to RDBMS, a relation is a table, whereas the tuples are correspondence to the rows in the table. Tuples in a pig does not require to contain the same number of fields and fields in the same position have the same data type

answered May 7, 2019 by Gitika
• 25,460 points

Related Questions In Big Data Hadoop

0 votes
1 answer

Why we use --split by command in Sqoop?

The command --split-by is used to specify the ...READ MORE

answered Apr 11, 2019 in Big Data Hadoop by Gitika
• 25,460 points
1,572 views
0 votes
0 answers

Why we use 'help' command in Hadoop Sqoop?

Use of help command in Hadoop sqoop. READ MORE

Apr 11, 2019 in Big Data Hadoop by amrita
48 views
0 votes
1 answer

Why do we need the FOR EACH operation in Pig Scripts?

The operation FOREACH in Apache Pig is ...READ MORE

answered Apr 30, 2019 in Big Data Hadoop by Gitika
• 25,460 points
36 views
0 votes
1 answer

What is relation keyword in pig?

Hey, A relation is a bag of tuples. ...READ MORE

answered May 6, 2019 in Big Data Hadoop by Gitika
• 25,460 points
48 views
0 votes
1 answer

What do we exactly mean by “Hadoop” – the definition of Hadoop?

The official definition of Apache Hadoop given ...READ MORE

answered Mar 16, 2018 in Big Data Hadoop by Shubham
308 views
+1 vote
1 answer

Hadoop Mapreduce word count Program

Firstly you need to understand the concept ...READ MORE

answered Mar 16, 2018 in Data Analytics by nitinrawat895
• 10,840 points
3,915 views
0 votes
1 answer

hadoop.mapred vs hadoop.mapreduce?

org.apache.hadoop.mapred is the Old API  org.apache.hadoop.mapreduce is the ...READ MORE

answered Mar 16, 2018 in Data Analytics by nitinrawat895
• 10,840 points
539 views
+1 vote
11 answers

hadoop fs -put command?

put syntax: put <localSrc> <dest> copy syntax: copyFr ...READ MORE

answered Dec 7, 2018 in Big Data Hadoop by Aditya
20,820 views
0 votes
1 answer

Why should we use "distinct" keyword in pig script?

Hey, The "distinct" statement is very simple. It ...READ MORE

answered May 3, 2019 in Big Data Hadoop by Gitika
• 25,460 points
50 views
+1 vote
1 answer

Why do we use STORE command in pig?

Hey, We use store command to store the ...READ MORE

answered May 7, 2019 in Big Data Hadoop by Gitika
• 25,460 points
76 views