What is real-time data warehouse?
Posted: Thu Jan 23, 2025 6:49 am
A real-time data warehouse captures business data as it occurs. When business activity is complete, this data is available in a stream and is instantly available for use.
What are pivot tables?
Aggregate tables are tables that contain existing warehouse data grouped by a specific dimension level. Aggregate tables are easier to retrieve data from than the original table, which has more records.
This table reduces the load on the database server and increases query performance.
What are fact tables without facts?
Fact-less fact tables are fact tables that do not contain a numeric fact column in the fact table.
How can we load the time dimension?
Time dimensions are usually loaded through all possible dates in a year, and this can be done with a program. Here, 100 years can be represented by one line per day.
18) What are non-additive facts?
Non-habit forming facts are said to be facts that cannot be summed up in any of the dimensions presented in the fact table. If there are changes in the dimensions, the same facts may be useful.
19) What is a conformal fact?
A consistent fact is a table that can be used in multiple data marts in conjunction with multiple fact tables.
20) What is Datamart?
Datamart is a specialized version of a data warehouse that contains a snapshot of operational data that helps business people make decisions based on the analysis of past trends and experiences. Datamart helps emphasize easy access to relevant information.
21) What is active data storage?
An active data warehouse is a data warehouse that enables decision makers in a company or organization to manage customer relationships effectively and efficiently.
22) What is the difference between Datawarehouse and OLAP?
Data warehouse is the place where all the data is stored canada consumer mobile number list for analysis, but OLAP is used to analyze the data, manage aggregates, break down the information into secondary level information.
23) What is an ER diagram?
An ER diagram is short for entity-relationship diagram, which illustrates the relationships between objects in a database. This diagram shows the structure of each table and the relationships between the tables.
ER diagram
24) What are the key columns in fact and dimension tables?
Foreign keys of dimension tables are primary keys of entity tables. Foreign keys of fact tables are primary keys of dimension tables.
25) What is SKD?
SCD is defined as slowly changing measurements and applies to cases where the record changes over time.
What are pivot tables?
Aggregate tables are tables that contain existing warehouse data grouped by a specific dimension level. Aggregate tables are easier to retrieve data from than the original table, which has more records.
This table reduces the load on the database server and increases query performance.
What are fact tables without facts?
Fact-less fact tables are fact tables that do not contain a numeric fact column in the fact table.
How can we load the time dimension?
Time dimensions are usually loaded through all possible dates in a year, and this can be done with a program. Here, 100 years can be represented by one line per day.
18) What are non-additive facts?
Non-habit forming facts are said to be facts that cannot be summed up in any of the dimensions presented in the fact table. If there are changes in the dimensions, the same facts may be useful.
19) What is a conformal fact?
A consistent fact is a table that can be used in multiple data marts in conjunction with multiple fact tables.
20) What is Datamart?
Datamart is a specialized version of a data warehouse that contains a snapshot of operational data that helps business people make decisions based on the analysis of past trends and experiences. Datamart helps emphasize easy access to relevant information.
21) What is active data storage?
An active data warehouse is a data warehouse that enables decision makers in a company or organization to manage customer relationships effectively and efficiently.
22) What is the difference between Datawarehouse and OLAP?
Data warehouse is the place where all the data is stored canada consumer mobile number list for analysis, but OLAP is used to analyze the data, manage aggregates, break down the information into secondary level information.
23) What is an ER diagram?
An ER diagram is short for entity-relationship diagram, which illustrates the relationships between objects in a database. This diagram shows the structure of each table and the relationships between the tables.
ER diagram
24) What are the key columns in fact and dimension tables?
Foreign keys of dimension tables are primary keys of entity tables. Foreign keys of fact tables are primary keys of dimension tables.
25) What is SKD?
SCD is defined as slowly changing measurements and applies to cases where the record changes over time.