A formal model of denormalized relational schemas based on outer joins of base relations is presented. The composition of joins is modeled with a hyper-tree, called hyper-schema, with vertexes ...

SQL history. Before there was SQL, databases had tight, navigational programming interfaces, and typically were designed around a network schema called the CODASYL data model. CODASYL (Committee ...

ER Model & Relational Model: An Entity-Relationship (ER) model is used to define entities such as Customer, Reservation, Order, Employee, Dish, Payment, and Inventory, along with their relationships.

Relational databases are built on a model that uses a structure of tables linked by defined relationships expressing dependencies between the data. ... notably SQL. Robust transactional support: ...

Our abstract model of the SQL category did not impose any restrictions on the structure of rows; we assumed only that we could determine a primary or foreign key to relate two rows. In the typical ...

There are, or were, two kinds of SQL database—transactional (OLTP) and analytic (OLAP). ... Rockset doesn’t use a traditional tabular relational database model with a fixed schema.

As Jinbase uses SQLite as its storage engine, it de facto supports the relational data model for which it exposes an interface, LiteDBC, for querying SQLite. LiteDBC is an SQL interface compliant with ...