Macro

Macro (a Greek prefix meaning long or large) may refer to:

Abbreviations

Regional climate levels in viticulture

In viticulture, there are several levels of regional climates that are used to describe the terroir or immutable characteristics of an area. These levels can be as broad as a macroclimate which includes entire wine regions or as small as a microclimate which includes the unique environment around an individual grapevine. In the middle is the mesoclimate which usually describes the characteristics of a particular vineyard site.

Levels

Macro (computer science)

A macro (short for "macroinstruction", from Greek μακρο- 'long') in computer science is a rule or pattern that specifies how a certain input sequence (often a sequence of characters) should be mapped to a replacement output sequence (also often a sequence of characters) according to a defined procedure. The mapping process that instantiates (transforms) a macro use into a specific sequence is known as macro expansion. A facility for writing macros may be provided as part of a software application or as a part of a programming language. In the former case, macros are used to make tasks using the application less repetitive. In the latter case, they are a tool that allows a programmer to enable code reuse or even to design domain-specific languages.

Macros are used to make a sequence of computing instructions available to the programmer as a single program statement, making the programming task less tedious and less error-prone. (Thus, they are called "macros" because a big block of code can be expanded from a small sequence of characters.) Macros often allow positional or keyword parameters that dictate what the conditional assembler program generates and have been used to create entire programs or program suites according to such variables as operating system, platform or other factors. The term derives from "macro instruction", and such expansions were originally used in generating assembly language code.

Create

Create may refer to:

Create (charity)

Create is a UK creative arts charity (registered charity number 1099733) based in London, which offers creative workshops and arts experiences led by professional artists in community settings, schools, prisons and hospitals.

The charity works with seven priority groups: young patients; disabled children and adults; young and adult carers; schoolchildren (and their teachers) in areas of deprivation; vulnerable older people; young and adult offenders (and their families); and marginalised children and adults (including homeless people and refugees).

Patrons include: choreographer/director Matthew Bourne OBE, writer Esther Freud, musician Dame Evelyn Glennie, composer/TV presenter Howard Goodall CBE, Royal Academician Ken Howard OBE, Guardian columnist/ex-offender Erwin James and pianist Nicholas McCarthy.

History

Create was co-founded on 7 July 2003 by current Chief Executive Nicky Goulder with the aim of transforming lives through the creative arts. Prior to this, she was Chief Executive of the Orchestra of St John's. In 2013, Nicky won the Clarins Most Dynamisante Woman of the Year Award, which recognises "the action and commitment of inspirational British women who work tirelessly to help underprivileged or sick children across the globe."

Data definition language

A data definition language or data description language (DDL) is a syntax similar to a computer programming language for defining data structures, especially database schemas.

History

The concept of the data definition language and its name was first introduced in relation to the Codasyl database model, where the schema of the database was written in a language syntax describing the records, fields, and sets of the user data model. Later it was used to refer to a subset of Structured Query Language (SQL) for creating tables and constraints. SQL-92 introduced a schema manipulation language and schema information tables to query schemas. These information tables were specified as SQL/Schemata in SQL:2003. The term DDL is also used in a generic sense to refer to any formal language for describing data or information structures.

Structured query language

Many data description languages use a declarative syntax to define fields and data types. Structured query language (e.g., SQL), however, uses a collection of imperative verbs whose effect is to modify the schema of the database by adding, changing, or deleting definitions of tables or other objects. These statements can be freely mixed with other SQL statements, making the DDL not a separate language.