What are some alternatives?
When comparing Teradata Database and Oracle DBaaS, you can also consider the following products
MySQL - The world's most popular open source database
PostgreSQL - PostgreSQL is a powerful, open source object-relational database system.
DB2 - IBM Db2 is database software that can reliably handle multiple workloads and the latest version of Db2 is optimized to provide extreme performance while lowering costs.
SQLite - SQLite Home Page
MariaDB - An enhanced, drop-in replacement for MySQL
SAP HANA - SAP HANA is an in-memory, column-oriented, relational database management system.