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Changes from CERA-2.3 to CERA-2.4

The following changes/supplements of CERA-2.3 have been accepted for Version CERA-2.4 (R=rename, D=definition, S=structure)
Type Concerning Subject
STable LOCATIONA field location_descr*2000 is inserted to enable comments on the locations.
STable CITATIONA field additional_info*250 is inserted to enable comments on the publication.
SGENERAL_KEY.general_keyLength of 31 is extended to 250 chars.
SPROGRESS.progress_descrLength is extended to 2000 chars.
SPROJECT.project_nameLength is extended to 250 chars.
STable INSTITUTEThe field additional_info is reduced to char*250.
STable DIF_ENTRYIs removed from CERA Core and placed into CERA Module Metadata_Standard.
STable SPATIAL_DATA_ORGTable moved from CERA Block SPATIAL INFORMATION to Block ATTRIBUTE.
Dall relation tablesIn the relational tables an entry_id not necessarily has to occur. So NULL entries may appear in views expanded over several tables.
DDISTRIBUTION.data_sizeTo enable input in scientific format (e.g., 2E+9), data type is changed from int to real.
DTable ENTRY.creation_dateFollowing DIF&CSDGM: creation date of metadata, not of data.
DTable ENTRY.review_dateFollowing DIF&CSDGM: review date of metadata, not of data.
DTable ENTRY.revision_dateFollowing DIF&CSDGM: field deleted.
DTable ENTRY.future_review_dateFollowing DIF&CSDGM: future review date of metadata, not of data.
DTEMPORAL_COVERAGE.stop_yearAn entry of 999999 indicates continously supplemented data. An appropriate item should exist in table CURRENTNESS_REF.
RBlock ATTRIBUTERenamed to PARAMETER.
RBlock SPATIAL INFORMATIONRenamed to SPATIAL REFERENCE.
RBlock PUBLICATIONRenamed to REFERENCE.

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Last change: Mon Mar 26 10:22:48 NFT 2001