12 Questions
What drives the PIT tables?
Snapshot (gsr_sdts)
How many snapshots are there in the PIT table?
2
What is the gsr_type for the standard PIT?
0
How are the hubs and links identified in the PIT tables?
Dimension key (hk_***_d)
Every hub and link in the PIT tables has a PIT table associated with it.
True
The gsr_type for the standard PIT is always 0.
True
There are more than 2 snapshots in the PIT table.
False
The end of all times for loading purposes in the PIT table is 8888-12-31 23:59:59.000000.
True
Match the following terms with their descriptions in the context of PIT tables:
PIT table = Index into descriptive data in satellites Snapshot (gsr_sdts) = Driving force behind PIT tables gsr_type = Always 0 for standard PIT End of all times = Time point used for loading purposes
Match the following characteristics with their association to the PIT tables:
Dimension key (hk_***_d) = Used to identify the PIT table Every hub and link = Has a corresponding PIT table Number of snapshots = Only 2 in the table gsr_seq = Used to identify the PIT table
Match the following entities with their role in relation to the PIT tables:
Point in Time (PIT) table = Associated with every hub and link Index into descriptive data = Performed by the PIT table Current snapshot = One of the two snapshots in the table Standard PIT = Always has gsr_type value of 0
Match the following explanations with their relevance to the PIT tables:
Driven by snapshot = Indicates how PIT tables are influenced 8888-12-31 23:59:59.000000 = Used for loading purposes in the PIT table General-purpose PIT = Represented by gsr_type value of 0 Identified by dimension key and gsr_seq = Key factors for identifying entries in the PIT table
This quiz covers the concept of Point in Time (PIT) tables in satellite data modeling. It includes topics such as indexing into descriptive data, the presence of PIT tables in hubs and links, and the role of snapshots in driving PIT tables. Additionally, it explores the attributes of the current snapshot and the end-of-time snapshot for loading purposes, along with the identification of PIT tables by dimension key and gsr_seq.
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