Time Dimension; Usage Metric - VMware VCENTER APPLICATION DISCOVERY MANAGER 6.1 - REPOSITORY Reference Manual

Table 4-16. Switch_Address_Forwarding Table
Name
MAC
V_LAN
TRG_NE_ID
Where:
ID is a Primary key
NE_ID, NIC_ID and TRG_NE_ID are Foreign keys

Time Dimension

This table provides the time dimension. Table
Table 4-17. Time Dimension Table
Name
TIME_ID
YEAR
QUARTER
QUARTER_NAME
MONTH
MONTH_NAME
DAY_OF_MONTH
DAY_OF_WEEK
DAY_OF_WEEK_NAME
WEEK_OF_YEAR
HOUR
Where:
TIME_ID is a Primary key

Usage Metric

This table is a multi‐dimensional OLAP fact table for capturing the demand of Dependency, Service, and
Network Element. The granularity of the data is of a single hour. Together with the time dimension and the
related entities, it is sliced and diced as needed. Table
Table 4-18. Usage Metric Table
Name
ENTITY_ID
TIME_ID
BASELINE_TIME_ID
VALUE
VMware, Inc.
Datatype Description
VARCHAR2(100) Forward MAC address
NUMBER(10) Virtual LAN
NUMBER(19) Forward network element
4‐17 lists the contents of the Time dimension table.
Datatype Description
NUMBER(19) Human readable number: yyyymmddhh
NUMBER(10) yyyy
NUMBER(10) 1‐4
VARCHAR2(50) Q1‐2008
NUMBER(10) 1‐12
VARCHAR2(50) January‐December
NUMBER(10) 1‐31
NUMBER(10) 1‐7
VARCHAR2(50) Sunday‐Saturday
NUMBER(10) 1‐52
NUMBER(10) 0‐23
4‐18 lists the contents of the Usage metric table.
Datatype Description
NUMBER(19) The entity of the usage metric. The data contains
foreign keys to all entity types: network_element,
service, and dependency.
NUMBER(19) The time dimension id: numeric value but human
readable: yyyymmddhh.
NUMBER(19) Baseline time id contains the hour part of the time_id
(baseline is for 24 hours).
NUMBER(19) The number of network transactions in the given time
(hour granularity).
Chapter 4 ADM ERD Schema
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