S K S, Author at Adglob Infosystem Pvt Ltd

PouchDB – Create Database

Post author:S K S
Post published:August 16, 2021
Post category:PouchDB
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You can create a database in PouchDB using the PouchDB constructor. Syntax Following is the syntax of using the PouchDB constructor. To this, you need to pass the name of…

PouchDB – Environment

Post author:S K S
Post published:August 16, 2021
Post category:PouchDB
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This chapter explains how to download and install PouchDB in your system. Installing PouchDB In order to work with PouchDB, you need to download the file .js file and include it in…

PouchDB – Home

Post author:S K S
Post published:August 16, 2021
Post category:PouchDB
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PouchDB is an open source in-browser database API written in JavaScript. It is modelled after CouchDB − a NoSQL database that powers npm. Using this API, we can build applications that work…

Apache Tajo – Custom Functions

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Post published:August 16, 2021
Post category:apache
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Apache Tajo supports the custom / user defined functions (UDFs). The custom functions can be created in python. The custom functions are just plain python functions with decorator “@output_type(<tajo sql datatype>)” as…

Apache Tajo – JDBC Interface

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Post published:August 16, 2021
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Apache Tajo provides JDBC interface to connect and execute queries. We can use the same JDBC interface to connect Tajo from our Java based application. Let us now understand how…

Apache Tajo – OpenStack Swift Integration

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Post published:August 16, 2021
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Swift is a distributed and consistent object/blob store. Swift offers cloud storage software so that you can store and retrieve lots of data with a simple API. Tajo supports Swift…

Apache Tajo – Integration with Hive

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Post published:August 16, 2021
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Tajo supports the HiveCatalogStore to integrate with Apache Hive. This integration allows Tajo to access tables in Apache Hive. Set Environment Variable Add the following changes to “conf/tajo-env.sh” file. $…

Apache Tajo – Integration with HBase

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Post published:August 16, 2021
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Apache Tajo supports HBase integration. This enables us to access HBase tables in Tajo. HBase is a distributed column-oriented database built on top of the Hadoop file system. It is…

Apache Tajo – Storage Plugins

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Post published:August 16, 2021
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Tajo supports various storage formats. To register storage plugin configuration, you should add the changes to the configuration file “storage-site.json”. storage-site.json The structure is defined as follows − { "storages":…

Apache Tajo – SQL Queries

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Post published:August 16, 2021
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This chapter explains about the following significant Queries. PredicatesExplainJoin Let us proceed and perform the queries. Predicates Predicate is an expression which is used to evaluate true/false values and UNKNOWN.…