Big Data

Why Do I need to install ?   Java is a open source and platform independent programming language. First released by Sun Microsystems in 1995. Java used to develop programs that run on Windows, Linux and Mac computers. There are lots of software will not work unless Java installed. What is JDK? Java Development Kit(JDK) is used to develop java application. which is includes JRE, JVM, interpreter and compiler. What is JRE? Java Runtime Environment(JRE) is a set of java APIs used to develop java applications. What is JVM? Java Virtual Machine(JVM) is use to execute the java applications. JDK will generate byte-code(0's,1's) from our source code. JVM will execute the byte-code and show output. Install Java 8 Step 1: Add Java Repository (PPA)   sudo add-apt-repository ppa:webupd8team/java Java Repository Step 2: Update your Package sudo apt-get update Update Package Step 3: Install Java sudo apt-get install oracle-java8-instal

  What is Data? Data is an unprocessed or raw format information. It can be any character,  text, numbers, images, audio, or video. What is Big Data? Big data is a term that describes the large amount of data. It’s used to process huge and complex data. Data that is structured, unstructured, semi-structured and very large cannot be processed by relational database engines on given time . Moreover, The data will be growing exponentially based on time. This type of data called "big data" . Categories Of Big Data Structured Structured data refers to any data that fixed fields and records for example RDBMS and csv files. Example of Structured data Unstructured Unstructured data refers to any data that does not have predefined format, for example machine generated logs and web page.   Example of Unstructured data Semi-Structured Semi-Structured data refers to any data that would be a raw data or typed data in a conv