1. Trafodion : It is a Transnational SQL-on-Hadoop DBMS. It is a webscale SQL-on-Hadoop solution enabling transnational or operational workloads on Apache Hadoop. The name “Trafodion” pronounced as “Tra-vod-eee-on”. It is a relational database management system that runs on Apache Hadoop which provides support for transnational or operational workloads in a big data environment and for large data sets using a parallel-aware query optimizer....

1. Transbase : It is a resource-optimized, high-performance, universally applicable RDBMS, developed and maintained by Transaction Software GmbH, Munich. It is a relational database management system that supports all important functions of the SQL standard. The database of Transbase is extensible via additional functions and custom data types also provide parallel execution of queries via dynamic multithreading technology....

1. Valentina Server : It is a Object-relational database and reports server and fast object-relational database server. It includes integrated database servers, Valentina Database Server and SQLite Database Server. It is a full featured, standards compliant multi-user access SQLite based database server....

1. Alibaba Cloud MaxCompute : The MaxCompute which is previously known as ODPS, is a general-purpose, fully managed, multi-tenancy data processing platform for large-scale data warehousing. It is used to store and compute batches of structured data. It contains a very large range of data warehouse solutions. It also very large data analysis and modeling services....

There may be a number of occasions where you need to create an exact copy of an already defined (or created) table. MySQL enables you to perform this operation. Because we may need such duplicate tables for testing over the data without having any impact over the original table and the data stored in it....

Inference rules in databases are also known as Armstrong’s Axioms in Functional Dependency. These rules govern the functional dependencies in a relational database. From inference rules a new functional dependency can be derived using other FDs. These rules were introduced by William W. Armstrong. In this article, we will come to know about all the rules proposed by him. Also, we will be exploring the prerequisites for it and will understand the topic in a better way....

Inheritance Hierarchies are crucial to building a structured and well-organized database. It is comparable to the idea of inheritance found in object-oriented programming languages. The main ideas of inheritance hierarchies in database management systems (DBMS) will be covered in this article, along with definitions, procedures, and in-depth examples to aid in understanding....

1. Oracle : Oracle is a relational database management system (RDBMS). It was developed by Oracle Corporation in 1980. It is the first database designed for grid computing that provides the most flexible and cost-effective way to manage information and application. It runs on major platforms like Windows, Unix, Linux, and macOS. It is a relational database in which data is accessed by the user through the application or query language called SQL....

1. UniData, UniVerse : It is a MultiValue database and application server with SQL mapping layer and meta database capabilities. It makes for easier database design, eliminating the constraints of SQL normalization. UniVerse is a component of the MultiValue application platform, Its advantages is fast, flexible data server for developing enterprise apps. UniVerse-based applications maximizing processing throughput of available resources, dynamically allocate available resources....

Database in any computer system is the collection of structured or unstructured data that can be used to perform various options like creation, deletion, etc. This database is managed by a special language known as SQL. In SQL language there are different joins that are used to assemble rows from two or more tables from the related column. Some of the joins are Inner Join, Left Join, and Right Join. In this article, we will explore the concepts with examples of Left Join and Left Outer Join. Along with this, we will also go through their main differences....

1. Nested Loop Join : Nested Loop Join is the simplest join algorithm which usually has better performance than all other types of joins due to a lesser number of comparisons involved in it. Each row in the outer table is compared to each row in the inner table. The Nested Loop Join algorithm for 2 relations R and S :...

1. ToroDB : It is a MongoDB-compatible JSON document store, built on top of PostgreSQL and it is a technology designed to fulfill the gap between document oriented and SQL databases. It is an open source NoSQL database that runs on top of a RDBMS which is compatible with MongoDB protocol and APIs. ToroDB is an open source project that reads a NoSQL document, automatically infers its structure, and transforms it into a set of tables and columns that represent the data into a relational form....