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A compiler is a program that translates source code from a high-level language to a low-level language or executable code. Learn about the different types of compilers, their phases, and the history of compiler development from the first languages to modern compilers.
SQL is a declarative language used to manage data, especially in a relational database management system (RDBMS). It consists of many types of statements, such as Data Query Language (DQL), Data Definition Language (DDL), Data Control Language (DCL), and Data Manipulation Language (DML).
An abstract syntax tree (AST) is a data structure that represents the structure of a program or code snippet. Learn how ASTs are used in compilers, program analysis, and other applications, and see examples and references.
PL/SQL is a programming language that adds control statements, variables, exceptions, and other features to SQL. Learn about PL/SQL program units, such as blocks, functions, procedures, packages, types, and triggers, and how to use them in Oracle Database.
A domain-specific language (DSL) is a computer language specialized to a particular application domain, in contrast to a general-purpose language (GPL). Learn about the types, uses, and examples of DSLs, and how they differ from scripting languages and data definition languages.
Trino is a fork of Presto that can query large data sets from heterogeneous data sources using ANSI SQL. Trino is written in Java, runs on a cluster of servers, and supports data lakes, federated queries, and various data platforms.
Apache Hive is a data warehouse software project that provides SQL-like interface to query data stored in various databases and file systems that integrate with Hadoop. It supports different storage types, metadata storage, compression, user-defined functions, and execution engines such as MapReduce, Tez, and Spark.