What are TypeORM Indices?

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TypeORM Indices are database indexes created by TypeORM, an Object-Relational Mapping (ORM) library for TypeScript and JavaScript. Indices are used to improve the query performance of a database. In TypeORM, developers can define indices on columns or combinations of columns, and can specify options such as unique, sparse, and where clauses. When a query is executed that includes the indexed column or columns, the database engine can use the index to quickly retrieve the relevant rows, rather than scanning the entire table. This makes queries faster and more efficient. TypeORM supports different types of indices, including primary keys, unique indices, and foreign key indices.