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2. Comparison of online source code playgrounds - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_online...

   Db2, Firebird, MariaDB, MySQL, Node.js, Oracle, Postgres, SQL Server, SQLite, YugabyteDB ExtendsClass [ao] Free Yes No No Yes MySQL, SQLite (SQL.js) PhpFiddle [ap] Free Yes No No Yes MySQL, SQLite runnable [aj] Free Yes Yes Yes No SQL Fiddle [aq] Free No No No Yes MySQL, Oracle, PostgreSQL, SQLite (WebSQL), SQLite (SQL.js) W3Schools [ae] Free ...

3. Trino (SQL query engine) - Wikipedia

   en.wikipedia.org/wiki/Trino_(SQL_query_engine)

   Trino is an open-source distributed SQL query engine designed to query large data sets distributed over one or more heterogeneous data sources. [1] Trino can query data lakes that contain a variety of file formats such as simple row-oriented CSV and JSON data files to more performant open column-oriented data file formats like ORC or Parquet [2] [3] residing on different storage systems like ...

4. W3Schools - Wikipedia

   en.wikipedia.org/wiki/W3Schools

   W3Schools is a freemium educational website for learning coding online. [1] [2] Initially released in 1998, it derives its name from the World Wide Web but is not affiliated with the W3 Consortium. [3] [4] [unreliable source] W3Schools offers courses covering many aspects of web development. [5] W3Schools also publishes free HTML templates.

5. Datalog - Wikipedia

   en.wikipedia.org/wiki/Datalog

   FoundationDB provides a free-of-charge database binding for pyDatalog, with a tutorial on its use. [37] Leapsight Semantic Dataspace (LSD) is a distributed deductive database that offers high availability, fault tolerance, operational simplicity, and scalability. LSD uses Leaplog (a Datalog implementation) for querying and reasoning and was ...

6. Presto (SQL query engine) - Wikipedia

   en.wikipedia.org/wiki/Presto_(SQL_query_engine)

   Presto (including PrestoDB, and PrestoSQL which was re-branded to Trino) is a distributed query engine for big data using the SQL query language. Its architecture allows users to query data sources such as Hadoop, Cassandra, Kafka, AWS S3, Alluxio, MySQL, MongoDB and Teradata, [1] and allows use of multiple data sources within a query.

7. Oracle SQL Developer - Wikipedia

   en.wikipedia.org/wiki/Oracle_SQL_Developer

   SQL Developer Data Modeler operates with and models metadata. [7] Prior to SQL Developer version 3, it constituted a separate (but integrated) free [8] counterpart of SQL Developer. As of SQL Developer version 3 modeling became an integrated part of the overall tool. "Data Modeler" can produce (among other outputs) .dmd files. [9] Data Miner [10]

8. Weka (software) - Wikipedia

   en.wikipedia.org/wiki/Weka_(software)

   Waikato Environment for Knowledge Analysis (Weka) is a collection of machine learning and data analysis free software licensed under the GNU General Public License. It was developed at the University of Waikato , New Zealand and is the companion software to the book "Data Mining: Practical Machine Learning Tools and Techniques".

9. Data manipulation language - Wikipedia

   en.wikipedia.org/wiki/Data_manipulation_language

   In SQL, the data manipulation language comprises the SQL-data change statements, [3] which modify stored data but not the schema or database objects. Manipulation of persistent database objects, e.g., tables or stored procedures, via the SQL schema statements, [3] rather than the data stored within them, is considered to be part of a separate data definition language (DDL).