SQL BI Training Online

SQL standsfor Structured Query Language. It is a programming language used to manage andchange relational databases.

SQL is aprogramming language used to manage and change databases, while BI is a set oftechniques and tools for analysing and understanding data. SQL is used to getto and get information from data, while BI is used to analyse and make sense ofthat information.

Tableau,Power BI, and QlikView are common BI tools that are used with SQL. With thesetools, you can use data stored in SQL databases to make interactive visualisations,dashboards, and reports.

You canuse techniques like indexing, normalisation, and splitting up large tables toimprove the performance of SQL queries in BI. You can also analyse and improvequery performance with tools like Explain Plan and Performance Schema.

ODBC,JDBC, and OLEDB are just some of the ways that BI tools can connect to SQLdatabases. The exact method will depend on the BI tool and database managementsystem used.

StarSchema is a type of database structure in which one or more dimension tablesare linked to a central fact table through foreign keys. This design is made sothat BI queries run quickly and it is easy to combine data. Snowflake Schema isa type of star schema where dimension tables are normalised into multiplerelated tables.

BI hasmany ways to deal with missing data, such as imputation, interpolation, anddeletion. The best way to do things will depend on the situation and what theanalysis is trying to find out.