What are User Defined Functions(UDF) in Apache Hive?
Apache hive is a data warehousing tool in which we use a SQL-like language called Hive Query Language(HQL) to perform various ETL tasks on given data. Hive is one of…
Apache hive is a data warehousing tool in which we use a SQL-like language called Hive Query Language(HQL) to perform various ETL tasks on given data. Hive is one of…
Task Tracker is a daemon in the Hadoop cluster node that accepts various tasks from Job Tracker. These tasks range from Map, Reduce, or Shuffle operations. They also run their…
What is ETL? ETL stands for Extract, Transform and Load. It is used for extracting data from different sources and transforming it and loading the data for the end-users to…
What exactly is Metadata? Metadata is the information that describes other data, or, simply speaking, it is data about the data. It is the descriptive, administrative, and structural data that defines…
Computer science is a broad field that relates to many items, such as analyzing data and developing software. In today's world, computer science is applicable in many industries such as…
Apache Maven is a build automation tool mainly used for Java-based projects. It helps in two aspects of a project: the build and the dependency management phase. It uses an…
Within the last couple of decades, usage of the internet has grown so much that, there are millions of data points produced every day. Information Technology (IT) -based companies have…
What is a Data Engineer? The general job of the engineer is to design and build things. In the field of software engineering, engineering design, and building software. When we…
Each database has one or more tables having rows and columns. Keys in the Database are columns or groups of columns that are used to identify rows in tables. These…
In today's world, many businesses and companies are developing their applications in-house to support their business and improve the customer experience. The company needs to provide continuous support to sustain…