True or False:When relating tables, the fields that define the relationships must have the same data type.
According to the official documentation, the following are the requirements for using relationships:
1) When relating tables, the fields that define the relationshipsmusthave the same data type. Changing the data type in the Data Source page does not change this requirement. Tableau will still use the data type in the underlying database for queries.
2) You can't define relationships based on geographic fields.
3) Circular relationships aren't supported in the data model.
4) You can't edit relationships in a published data source.
5) You can't define relationships between published data sources.
6) Your workbook must use an embedded data source for you to be able to edit relationships and performance options in the Data Source page in Tableau Online or Tableau Server.
When field names in the Union do not match, then:
By default, both field names are present in the Union, but contain several null values!
When field names in the union do not match, fields in the union contain null values.You can merge the non-matching fields into a single field using the merge option to remove the null values.When you use the merge option, the original fields are replaced by a new field that displays thefirstnon-null value for each row in the non-matching fields.
You can also create your own calculation or, if possible, modify the underlying data to combine the non-matching fields.
For example, suppose you have the following customer purchase information stored in three tables, separated by month. The table names are 'May2016,' 'June2016,' and 'July2016.'
A union of these tables creates the following single table that contains all rows from all tables.
Now suppose a fourth table, 'August2016', is added to the underlying data. Instead of the standard 'Customer' field name, it contains an abbreviated version called 'Cust.'
Which of the following are valid Dashboard size options?
Scaled isNOTa valid size options when creating Dashboards in Tableau!
After you create a dashboard, you might need to resize and reorganize it to work better for your users.
When field names in the Union do not match, then:
By default, both field names are present in the Union, but contain several null values!
When field names in the union do not match, fields in the union contain null values.You can merge the non-matching fields into a single field using the merge option to remove the null values.When you use the merge option, the original fields are replaced by a new field that displays thefirstnon-null value for each row in the non-matching fields.
You can also create your own calculation or, if possible, modify the underlying data to combine the non-matching fields.
For example, suppose you have the following customer purchase information stored in three tables, separated by month. The table names are 'May2016,' 'June2016,' and 'July2016.'
A union of these tables creates the following single table that contains all rows from all tables.
Now suppose a fourth table, 'August2016', is added to the underlying data. Instead of the standard 'Customer' field name, it contains an abbreviated version called 'Cust.'
Which of the following are valid Dashboard size options?
Scaled isNOTa valid size options when creating Dashboards in Tableau!
After you create a dashboard, you might need to resize and reorganize it to work better for your users.
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