Term 
Information and communication technologies (ICT)
Consists of the hardware, software, networks, and media for the collection, storage, processing, transmission and presentation of information (voice, data, text, images), as well as related services. ICT can be split into Information and Communication infrastructure (ICI) and Information Technology (IT).

Questionnaire design
The design (text, order, and conditions for skipping) of the questions used to obtain the data needed for the survey.
Source: OECD Glossary of Statistical Terms (http://stats.oecd.org/glossary/)

Questionnaire
A group or sequence of questions designed to elicit information on a subject, or sequence of subjects, from a reporting unit or from another producer of official statistics.
Source: SDMX  Metadata Common Vocabulary (http://sdmx.org)

Survey design
All the aspects of a survey from the establishment of a need for data to the production of final outputs (the microdata file, statistical series, and analysis). Context: The survey design addresses the following issues: what statistics are produced, for which population, when, and with what accuracy; what data are to be collected for which units of the population of interest, and what are the methods by which those data are to be collected and processed to produce the required statistics. Operational, organisational and administrative issues are usually addressed.
Source: OECD Glossary of Statistical Terms (http://stats.oecd.org/glossary/)

Statistical standard
An agreed rule or guideline on how one or more parts of the statistical business process should be carried out, conforming with requirements for professionalism. Context: Components of a standard include:  definition(s)  statistical units  classification(s)  coding process(es)  questionnaire module(s)  output categories The use of statistical standards permits the repeated collection of statistics on a consistent basis. They also enable the integration of data over time and across different data sources, allowing the use of data beyond the immediate purpose for which it was produced. Standards also reduce the resource requirements associated with many aspects of survey development and maintenance.
Source: SDMX  Metadata Common Vocabulary (http://sdmx.org)

Statistical metadata
Data about statistical data. Context: Statistical metadata comprise data and other documentation that describe objects in a formalised way. Metadata provide information on data and about processes of producing and using data. Statistical metadata describe statistical data and  to some extent  processes and tools involved in the production and usage of statistical data. Statistical metadata can be classified in various ways, but there is a clear highlevel distinction between the metadata needed to search for and display data (Structural metadata) and the metadata that give more information on definitions, methodologies, processes and quality (Reference metadata).
Source: OECD Glossary of Statistical Terms (http://stats.oecd.org/glossary/)

Statistical information
Aggregated or unitlevel information obtained through statistical activities. Context: Statistical information includes semantic descriptions (metadata) needed for interpretation of these data.
Source: SDMX  Metadata Common Vocabulary (http://sdmx.org)

Source data
Data collected on a regular basis (by survey from respondents, or from administrative sources) by survey statisticians in the national statistical system to be edited, imputed, aggregated and/or used in the compilation and production of official statistics.
Context: In SDMX, "Source Data" refers to a description of the data collection programs and their adequacy for the production of statistics, including meeting the requirements for methodological frameworks, scope, classifications systems, and basis for recording.
In the context of the SDDS, "nature of the basic data" includes whether data are compiled from administrative records (e.g., monetary and government data), surveys, censuses, or any combination of these. It should also briefly describe the means of data collection. In cases where sampling techniques are used, the sampling procedures should be briefly described.
Source: OECD Glossary of Statistical Terms (http://stats.oecd.org/glossary/)

Sampling
Sampling is the process of selecting a number of cases from all the cases in a particular group or universe. Context: Sampling is the research strategy of collecting data from a part of a population with a view to drawing inferences about the whole. The “population” in this sense is often termed the “universe".
Source: OECD Glossary of Statistical Terms (http://stats.oecd.org/glossary/)

Sample survey
A sample survey is a survey which is carried out using a sampling method, i.e. in which a portion only, and not the whole population is surveyed.
Source: OECD Glossary of Statistical Terms (http://stats.oecd.org/glossary/)

