article thumbnail

How to Normalize Relational Databases With SQL Code?

Analytics Vidhya

If a corrupted, unorganized, or redundant database is used, the results of the analysis may become inconsistent and highly misleading. So, we are […] The post How to Normalize Relational Databases With SQL Code? appeared first on Analytics Vidhya.

article thumbnail

Designing A Non-Relational Database Engine

Data Engineering Podcast

The default association with the term "database" is relational engines, but non-relational engines are also used quite widely. In this episode Oren Eini, CEO and creator of RavenDB, explores the nuances of relational vs. non-relational engines, and the strategies for designing a non-relational database.

article thumbnail

Step-by-Step Roadmap to Learn SQL in 2023

Analytics Vidhya

After being introduced in the 70s, it has become the standard querying language for relational databases. […] The post Step-by-Step Roadmap to Learn SQL in 2023 appeared first on Analytics Vidhya. SQL is widely used in the field of data science and is considered an essential skill to have if you work with data.

SQL 223
article thumbnail

Understanding the Basics of Database Normalization

Analytics Vidhya

Introduction Data normalization is the process of building a database according to what is known as a canonical form, where the final product is a relational database with no data redundancy. More specifically, normalization involves organizing data according to attributes assigned as part of a larger data model.

Database 221
article thumbnail

Top 8 Interview Questions on Apache Sqoop

Analytics Vidhya

and relational database servers(MySQL, Oracle, PostgreSQL, […] The post Top 8 Interview Questions on Apache Sqoop appeared first on Analytics Vidhya. Introduction In this constantly growing technical era, big data is at its peak, with the need for a tool to import and export the data between RDBMS and Hadoop.

Hadoop 222
article thumbnail

Top 5 SQL Interview Questions

Analytics Vidhya

Introduction SQL is a database programming language created for managing and retrieving data from Relational databases like MySQL, Oracle, and SQL Server. SQL(Structured Query Language) is the common language for all databases. In other terms, SQL is a language that communicates with databases.

SQL 168
article thumbnail

Simplify Delta Lake Complexity with mack.

Confessions of a Data Guy

Anyone who’s been roaming around the forest of Data Engineering has probably run into many of the newish tools that have been growing rapidly around the concepts of Data Warehouses, Data Lakes, and Lake Houses … the merging of the old relational database functionality with TB and PB level cloud-based file storage systems.

Data Lake 162