Answered: Perform the following queries in SPARQL…

Perform the following queries in SPARQL on the given d Data: @prefix : @prefix ns: :laptop ns:sellprice 760 :laptop ns:buying_price 620 :smartphone ns:sell price :smartphone ns:buying price 323 368

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Concept explainers

Multiple Table

In a database, a table is used to store data in the form of rows and columns. Rows are aligned horizontally and identified by one or more values in a specific column. Columns are vertically aligned and identified by a unique column name.

Question

Perform the following queries in SPARQL on the given data.
Data: @prefix : <http://example.org/items/>
@prefix ns: <http://example.org/ns#>
:laptop ns:sellprice 760
:laptop ns:buying_price 620
:smartphone ns:sell_price 368
:smartphone ns:buying_price 323
a) Find profit on each item.
b) List the items where profit is more than 70.

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