About Metacatalog is a management tool for a PostgreSQL/PostGIS database that is primarily used to store meta-data of environmental open data. While it can also store the data itself, it is more meant as a Meta-database that should rather interface the original data stores. Metacatalog has three main submodules: the Database Models a Python API a CLI The full documentation can be found at: https://vforwater.github.io/metacatalog. This Version With version 0.3 the timeseries tables was completely refactored. This table is now using an ARRAY data-type and can store more than one value per record. To keep track of the actual data, the Datasource model now stores the names of each element and the Detail is using a JSONB data-type to store nested details. This way, multiple informations can be referenced by the data names to attribute metadata to only a part of a record.