Posts for Technology Category
MongoDB Indexes

MongoDB Indexes

MongoDB supoort different types of indexes such as Single Field Indexes, Compound Indexes, Multikey Indexes, Text Indexes,? Wildcard Indexes, 2dsphere Indexes, 2d Indexes, geoHaystack Indexes, Hashed Indexes, and default _id index.

Indexes support the efficient execution of queries in MongoDB queries. Without indexes, MongoDB must perform a collection scan, i.e. scan every document in a collection. Any query if you dont use an index means that full scan occurs on collection. If an appropriate index exists for a query, MongoDB can use the index to limit the number of documents it must inspect.

The best approach...

What’s Big Query?

What’s Big Query?

Yes. You have an opportunity to store and query massive datasets on Google Cloud Platform. Big Query which is an is an enterprise data warehouse that solves this problem by enabling super-fast SQL queries using the processing power of Google’s infrastructure.

Google BigQuery is a cloud-based enterprise data warehouse that offers rapid?SQL queries?and interactive analysis of...

How to Restore Some Data or a Whole Table on Oracle?

How to Restore Some Data or a Whole Table on Oracle?

Accidentally dropping a table? can be a career ending action is if you made in production environment.

The best ways is to use the FLASHBACK TABLE statement to restore an earlier state of a table in the event of human or application error. The time in the past to which the table can be flashed back...

Selection Sort Algorithm

Selection Sort Algorithm

  • July 23, 2019
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// C# : Selection Sort using System; class Secimli { static void sort(int []arr) { int n = arr.Length; // One by one move boundary of unsorted subarray for (int i = 0; i < n - 1; i++) { //...
Ionic 4  – Globalization & Localization

Ionic 4 – Globalization & Localization

  • July 18, 2019
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Multi-language translation, OR internationalization-localization is a growing need for every app that wants to target international customers. Till date, majority of apps have been developed in English, no surprise ! In this blog post we will learn how to implement translation, or technically???Internationalization + Localization in Ionic 4 apps.

First we need to understand the steps...

MongoDB GeoJSON Objects

MongoDB GeoJSON Objects

  • July 01, 2019
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Introduction to Geospatial Queries

In this post, we feature a comprehensive Example on MongoDB Geospatial Query Operators. MongoDB is a JSON based document storage database. MongoDB stores the records in the form of unstructured JSON documents. It allows the flexibility of having varying number of columns for every record. This feature of MongoDB has been put...

Hadoop installation

Hadoop installation

  • October 14, 2018
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Hadoop: Setting up a Single Node Cluster.

This document leads how to set up and configure a single-node Hadoop installation so that you can quickly perform simple operations using Hadoop MapReduce and the Hadoop Distributed File System (HDFS).

Supported Platforms Linux is supported as a development and production platform. Hadoop has been demonstrated on GNU/Linux clusters with 2000...

Numpy Array vs. Python Lists

  • September 27, 2018
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Numpy Array vs. Python Lists

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Numpy is the core library for scientific computing in Python. It provides a high-performance multidimensional array object, and tools for working with these arrays. A numpy...

What’s New in Java 10??

What’s New in Java 10??

  • September 27, 2018
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What’s New in Java 10?

Oracle seems to be respecting the schedule this time and java 10 will be publicly released!
In this article, will explore 10 features coming to this new update for java.

1. JEP 286: Local Variable Type Inference

Something that is new in Java 10 and perhaps the most interesting feature, at least...

About Me

I am a dad of two wonderful boys, Utku Efe and Omer Eren, and married with Elif. In addition, I am an academician and AI/ML scientist because I worked more than 15 years in universities, have M.S and Ph.D. thesis and more than 20 scientific papers/presentations and 100 citations. Now people call me as a Principal Developer in my last company :).
I am really hungry on learning new technologies and get more fun while developing new softwares.

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