Table metrics:

  • Cardinality: table cardinality (number of rows of a table).
  • Rows: number of rows of the table (same as Cardinality, it is different at partition or segment level).
  • Data Size: bytes for all the compressed data in segments and partitions. It does not include dictionary and column hierarchies.
  • Columns Hierarchies Size: bytes of automatically generated hierarchies for columns (used by MDX).
  • User Hierarchies Size: bytes of user-defined hierarchies.
  • Relationship Size: bytes of relationships between tables.
  • Columns Total Size: bytes of all the structures related to a column (sum of Data Size, Dictionary Size, and Columns Hierarchies Size).
  • Dictionary Size: bytes of dictionary structures.
  • Table Size: bytes of the table of the column (sum of Columns Total Size of all the columns plus User Hierarchies Size and Relationships Size of the table).
  • Table Size %: ratio of Columns Total Size vs. Table Size
  • Database Size %: ratio of Table Size vs. Database Size (sum of Table Size of all the tables).
  • Segments #: number of segments.
  • Partitions #: number of partitions.
  • Columns #: number of columns (always 1 for a single column).
  • Encoding_: encoding type of the segments (HASH/VALUE); shows Many for group of segments with different encoding.
  • RI Violations: number of relationships with referential integrity violations, assigned to the table on the one-side of the M:1 relationship; such table has an additional blank row.
  • Bid. Filters: number of relationships with bidirectional filter propagation.
  • MMR: number of many-to-many cardinality relationships.
Last update: Jul 22, 2024