A snapshot view uses a host’s native file system to hold versions of file and directory elements that have been loaded from a VOB . ... In addition to copies of versions, the snapshot view directory can contain view-private objects. It also contains some files created to help manage the view.
How do I create a snapshot view in ClearCase?
- From UNIX, register the view storage location in the UNIX and Windows regions:
- Create a snapshot view from a Windows client using. cleartool mkview -snapshot -tag <tag name> -stgloc <stgloc name> <local snapshot view path name> ...
- The snapshot view will need to have a tag in the UNIX region as well.
How do you make a ClearCase view in commands?
- From the File Browser, click View > Create. The View Creation wizard starts and opens the Create View window. Follow the steps in the View Creation wizard.
- Use cleartool mkview. For a dynamic view, enter this command (Rational® ClearCase® only): cleartool mkview -tag view-tag dynamic-view-storage-path.
How do you make a ClearCase dynamic view?
- In the ClearTeam Navigator, create a new view by selecting ClearCase -> Create View or join a ClearCase UCM project by selecting ClearCase -> Join Project.
- If you are creating a new view, specify the View Type as Dynamic on the Create a ClearCase view page.
What is snapshot view in ClearCase?
A snapshot view uses a host’s native file system to hold versions of file and directory elements that have been loaded from a VOB . In addition to copies of versions, the snapshot view directory can contain view-private objects. ... It also contains some files created to help manage the view.
Is view a snapshot?
They are the same thing. Snapshot is the original name and materialized view is the new name.
What is the second meaning of snapshot?
1 : a casual photograph made typically by an amateur with a small handheld camera. 2 : an impression or view of something brief or transitory a snapshot of life back then .
What is the difference between snapshot and view?
snapshot is an old and deprecated term for a materialized view . They’re exactly the same thing, snapshot is just an older term . A view is a stored query. It consumes (effectively) no space, just the space required to store the text of the query in the data dictionary.
Does materialized view store data?
A materialized view is a pre-computed data set derived from a query specification (the SELECT in the view definition) and stored for later use . Because the data is pre-computed, querying a materialized view is faster than executing a query against the base table of the view.
Why is it called a snapshot?
The term arose from the fascination of artists with the “classical” black-and-white vernacular snapshot , the characteristics of which were: 1) they were made with a hand-held camera on which the viewfinder could not easily ‘see’ the edges of the frame, unlike modern cheap digital cameras with electronic viewfinder, and ...
What is the snapshot for?
With Snapshot, we measure a variety of factors related to your driving , including things such as the time of day you drive, sudden changes in speed (hard brakes and rapid accelerations), the amount you drive, and, for customers using the mobile app in some states, how you’re using your mobile phone while driving.
What is the function of snapshot?
A snapshot of a snapshot. Creates a backup of a snapshot that was written into . Taking a snapshot of a writable snapshot is similar to taking a snapshot of a volume.
What is the difference between snapshot and view in Oracle?
There is no basic difference between the materialized view and snapshot . Snapshot is an old term for materialized view. ... Or in other words a materialized view is a replica of a target master from a single point in time. In the earlier version of Oracle database snapshots were enhanced to enableDMLs.
Which is better view or materialized view?
Views are virtual only and run the query definition each time they are accessed. Also when you need performance on data that don’t need to be up to date to the very second, materialized views are better , but your data will be older than in a standard view.
Why do we use materialized view?
You can use materialized views to achieve one or more of the following goals: Ease Network Loads . Create a Mass Deployment Environment . Enable Data Subsetting .
What is faster join or subquery?
The advantage of a join includes that it executes faster. The retrieval time of the query using joins almost always will be faster than that of a subquery. By using joins, you can maximize the calculation burden on the database i.e., instead of multiple queries using one join query.
