Structured query language standard

SQL. SQL is the Structured Query Language standard promulgated by IBM. It is the de facto standard for relational data base management systems (RDBMSs). The standard defines the syntax of commands that can be used to access and retrieve information from data stored in one or more flat two-dimensional tables. Most... 

ORACLE is available in our company also on the VAX computer cluster. Figure 1 presents the major relevant functions. The kernel comprises all software for the management of the database and other parts of the system. Data are stored in a collection of tables described by a dictionary. A table consists of columns and rows. SQL (Structured Query Language), a standard query language, forms a shell round the kernel. Instructions for the kernel are passed down via SQL. 

A set of specifications providing the means to retrieve and manipulate information represented in RDF(S) (or OWL, respectively) is the SPARQL Protocol and RDF Query Language (World Wide Web Consortium 2013). The primary component of the standard is the SPARQL Query Language SPARQL is in many regards similar to the well-known Structured Query Language (SQL), which is supported by most relational database systems. 

Similarity to structured query language (SQL) In order to retrieve the model elements in a standard manner, model query language (MQL) is required. Such model query language can be used via user interface similar to SQL. 

Chemical databases are not static libraries, archived forever with no interest in retrieval they are intended to be used. It is useful to pose questions about the contents of a database, and to retrieve example structures. These questions are phrased in a chemical language that is syntactically simple, but semantically rich. Usually, this query language is built on top of standard graphical chemical nomenclature, and augmented by features appropriate to the subdomain of chemistry represented in the database. 

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