Article 1 - Definitions

‘Centralised Securities Database’ or ‘CSDB’ means the Centralised Securities Database set up by the European System of Central Banks (ESCB);

‘input data’ means any data provided to the CSDB from one or more of the following data sources: a) both national central banks of the Member States whose currency is the euro (hereinafter the ‘NCBs’) and national central banks of the Member States whose currency is not the euro (hereinafter the ‘non-euro area NCBs’; b) European Central Bank-internal sources; c) commercial data providers; d) administrative sources; e) the public domain;

‘input provision bracket’ means a period of working days each calendar month, which is defined by the European Central Bank (ECB) and during which the NCBs may provide input data to the CSDB;

‘output data’ means item-by-item data that are automatically derived in the CSDB by compounding input data into complete, high quality single data records;

‘output feed data’ means the subset of item-by-item output data and characteristics listed in Annex III to this Guideline that support the production of statistics or other uses;

‘CSEC aggregate statistics’ means aggregated securities issues statistics covering stock and flow aggregates of securities issuances produced from item-by-item CSDB output data as specified in Annex IV to this Guideline;

‘Data Quality Management’ or ‘DQM’ means the activity of ensuring, verifying and maintaining the quality of output feed data and CSEC aggregate statistics through the use and application of DQM targets, DQM metrics, DQM thresholds and specific DQM workflows;

‘Data Source Management’ or ‘DSM’ means the activity of identifying and correcting directly with a data provider repetitive and/or structural mistakes in input data;

‘initial DQM’ means DQM of item-by-item output feed data and CSEC aggregate statistics, covering the end-month preview for the most recent reference month and carried out on a monthly basis;

‘regular DQM’ means DQM of item-by-item output feed data and CSEC aggregate statistics, covering the reference months prior to the month covered by initial DQM and carried out on a monthly basis, taking into account non-CSDB benchmark data provided by various data sources with a view to ensuring that CSDB output data quality satisfies the requirements for CSDB feed data;

‘DQM target’ means a benchmark for assessing the quality of output feed data, as specified in Annex II to this Guideline;

‘DQM metric’ means a statistical indicator measuring the level to which a certain DQM target has been reached, as specified in Annex II to this Guideline;

‘DQM threshold’ means the minimum level of verification work to be conducted in order to satisfy the requirements of the DQM framework for a DQM target;

‘DQM exception’ means a possible data quality issue that is identified via a specified rule and for which the data needs to be confirmed or corrected in order to reach the respective DQM threshold;

‘DQM workflow’ means a technical process applied for the correction of input data in order to comply with a DQM threshold;

‘end-month preview’ means a daily update of output data and of DQM metrics which produces an approximation of output data for the forthcoming end-month status;

‘initial CSEC aggregate statistics’ means CSEC aggregate statistics covering the most recent reference month;

‘regular CSEC aggregate statistics’ means CSEC aggregate statistics covering the reference months prior to the month covered by initial CSEC aggregate statistics;

‘CSEC priority series’ means the lowest-level CSEC aggregate statistics that are subject to the DQM requirements, as specified in Annex II and Annex IV to this Guideline;

‘reference month’ means the calendar month to which the relevant data or statistics refer;

‘working day’ is a complete day which is not an ECB public holiday, as published on the ECB’s website;

‘verification’ means the process of checking CSDB output feed data as well as CSEC aggregate statistics and, if necessary, correcting CSDB input data, hereby applying the DQM workflow;

‘resident’ has the meaning defined in Regulation (EU) No 549/2013 of the European Parliament and of the Council ¹;

‘ISIN code’ means the International Securities Identification Number, as defined by the International Standards Organization (ISO) in ISO 6166;

‘linking entity identifier’ means an entity identifier that is included both in the CSDB and in the ESCB’s Register of Institutions and Affiliates Data (RIAD) data set and that is either a RIAD code, another national entity identifier used by the relevant NCB or non-euro area NCB, a Legal Entity Identifier (LEI) defined by ISO 17442, or another entity identifier commonly accepted by the ECB and the relevant NCB or non-euro area NCB.