QlikView Data Loading – Your Fast Lane to Data Transformation!
In QlikView, data loading refers to the process of importing data from various sources into the QlikView application. The data can be loaded from a variety of sources, such as databases, spreadsheets, text files, and web services.
QlikView uses a data loading script, which is written in the QlikView Scripting Language (QlikView’s proprietary scripting language), to define how data is loaded into the application.
The script can also be used to perform various data cleaning and transformation tasks, such as removing duplicates, renaming fields, and performing calculations. The script can also be used to create and load data from multiple data sources and join them together into a single data model.
Data loading in QlikView is done in two stages; the first stage is the data connection and data extraction, and the second stage is data transformation and data modelling.
Data connection and data extraction are made using the “Connect” statement; it’s used to define the connection to the data source and extract the data. The data can be extracted from a wide range of data sources such as databases, Excel files, CSV files, and many other sources.
Data transformation and data modelling are done using the “Load” statement. It’s used to transform and model the data to be used by the application; this can include tasks such as renaming fields, creating calculated fields, and joining tables.
QlikView provides a variety of data loading options, including the ability to schedule data reloads and the ability to load data incrementally, allowing the application to only load new or changed data rather than reloading the entire data set each time. This makes it a powerful tool for working with large and complex data sets.