Question: What is a "declaration match" in the game of Cricket?
About the article "Cricket", section "Types of matches".

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This is the most traditional version of cricket, with rules most closely replicating the original rules of cricket from the 16th and 17th century.
It is a single innings game with a set time limit for the entire game to be completed in.
To win the game, a side must both score the highest aggregate amount of runs and take all ten of the opposition wickets.
It is up to the side batting first to declare when they feel they have enough runs to be able to win the match.
In this format of cricket, if the side batting second do not lose all ten of their wickets, the match is said to have ended in a draw. 
In January 2012 Cricket Ireland chief executive Warren Deutrom made the bold declaration that Ireland will be playing Test cricket by 2020.
Their desire to reach Test status is in part to stem the tide of Irish players using residency rules to switch to playing for England to play at full international Test match level.
Warren Deutrom outlined the ambition as he unveiled the new strategic plan for Irish cricket to 2015.
The plan sets out a series of stretching goals including increasing the number of participants in the game to 50,000, setting a target of reaching 8th in the World rankings, establish a domestic first-class cricket structure and reinforcing cricket as the 5th major team sport in Ireland.
Deutrom had already sent a letter to the ICC in 2009 stating his board's intention to apply for Full Membership – a potential pathway to Test cricket – and to seek clarification on the process.
The 2012 plan's aim to achieve Test status by 2020, 
The earliest known reference to cricket in the county is the Nottingham Cricket Club v Sheffield Cricket Club match on the Forest Racecourse at Nottingham on Monday 26 and Tuesday 27 August 1771.
The outcome of the game was "not determined on account of a dispute having arisen by one of the Sheffield players being jostled"!
The match is the first important inter-county match involving teams from either Nottinghamshire or Yorkshire.
This match involved the old Nottingham town club which continued to play first-class cricket into the 19th century.
"For information about first-class cricket in the county before the formation of Notts CCC, see : "Nottingham Cricket Club 
Declaration may refer to:  Declaration (computer programming), specifies the identifier, type, and other aspects of language elements  Declaration (cricket), when the captain of a cricket team declares its innings closed  Declaration (law), a type of relief that may be ordered by a court or tribunal  Declaration (poker), a formal expression of intent to take some action in the card game poker  Declaration of independence, an assertion of the independence of an aspiring state or states  Declaration of war, a formal declaration indicating that a state of war exists between nations  "The Declaration" (novel), a 2008 children's novel by Gemma Malley  "Declaration" (book), a self-published electronic pamphlet by Michael Hardt and Antonio Negri  A type of sentence  A type of speech act in linguistics  
Earliest cricket.
It is almost certain that cricket reached London, and thereby Middlesex, by the 16th century.
Early references to the game in London or Middlesex are often interchangeable and sometimes it is not clear if a particular team represents the city or the county.
"See:" History of cricket to 1696 and History of cricket 1697 - 1725The first definite mention of cricket in London or Middlesex dates from 1680.
It is a clear reference to "the two umpires" (the earliest mention of an umpire in what seems to be a cricket connection) and strongly suggests that the double wicket form of the game was already well known in London.
The earliest known match in Middlesex took place at Lamb's Conduit Fields in Holborn on 3 July 1707 involving teams from London and Croydon.
In 1718, the first reference is found to White Conduit Fields in Islington, which later became a very famous London venue.
The earliest known reference to a team called Middlesex is on 5 August 1728 when it played London Cricket Club "in the fields behind the Woolpack, in Islington, near Sadlers Wells, for £50 a side".
This was also the earliest known first-class match involving a Middlesex team.
"For information about Middlesex county teams before the formation of Middlesex CCC, see: "Middlesex county cricket teams