What does a teradata developer do?

1 Data modeling

Data modeling is the process of creating a logical and physical representation of the data structures and relationships in a database. A teradata developer uses data modeling techniques, such as normalization, denormalization, dimensional modeling, and star schema, to design efficient and scalable databases that meet the business requirements and support the analytical queries. A teradata developer also uses tools, such as ERwin or Teradata Studio, to create and document the data models.

2 Data loading

Data loading is the process of transferring data from various sources, such as files, web services, or other databases, to the Teradata database. A teradata developer uses tools and utilities, such as FastLoad, MultiLoad, TPT, or BTEQ, to perform different types of data loading operations, such as bulk loading, incremental loading, or upsert loading. A teradata developer also applies data validation, data cleansing, and data transformation rules to ensure the data quality and consistency.

3 Data extraction

Data extraction is the process of retrieving data from the Teradata database for various purposes, such as reporting, analysis, or migration. A teradata developer uses SQL, the standard language for querying relational databases, to write complex and optimized queries that fetch the relevant data from the database. A teradata developer also uses tools and utilities, such as BTEQ, TPT, or FastExport, to export the data to different formats, such as CSV, XML, or JSON.

4 Data transformation

Data transformation is the process of converting data from one format or structure to another, according to the business logic or the target system. A teradata developer uses tools and languages, such as SQL, BTEQ, TPT, or Python, to perform various data transformation operations, such as aggregation, filtering, sorting, joining, splitting, or pivoting. A teradata developer also uses functions and procedures, such as UDFs, UDTs, or macros, to implement custom logic or calculations on the data.