Multitenant database

Multitenant database architecture for the next-generation of database cloud. Arquitectura de base de datos multicliente para la próxima generación de database cloud. The multitenant architecture enables an Oracle database to function as a multitenant container database (CDB).

A CDB includes zero, one, or many customer-created pluggable databases (PDBs). A PDB is a portable collection of schemas, schema objects, and nonschema objects that appears to an Oracle Net client as a non-CDB. Onward From 19c onward you are allowed to have user-defined PDBs in a CDB without having to license the multitenant option, as described in the documentation here. SQL Database supports row-level security, which can enforce that data returned from a query be scoped to a single tenant.

Processing: A multi-tenant database shares compute and storage resources across all its tenants. The database as a whole can be monitored to ensure it is performing acceptably. Multitenancy reduces this overhead by spreading it over many customers.

Further cost savings may come from licensing costs of the underlying software (such as operating systems and database management systems). Put crudely, if you can run everything on a single software instance, you only have to buy one software license. In the multitenant architecture, a container is a collection of schemas, objects, and related structures. Enterprise database consolidation leads to greater scalability and improved resource utilization.

Starting in Oracle Database 20c (2), this manual explains how to administer containers as containers, for example, how to create CDBs and PDBs, start them up and shut them down, and perform cross-container operations. It delivers isolation, agility and economies of scale. An existing database can simply be adopted with no application changes required. A multitenant container database can hold many pluggable databases.

Home » Articles » 12c » Here. No, esto es más a nivel de base de datos y programación, la mejor base de datos que conozco para tener multitenant es postgresql, es la única recomendación específica.

Multi-tenancy is an architecture in which a single instance of a software application serves multiple customers. Each customer is called a tenant. The next set of examples walks you through the steps to create a container database with the DBCA.

There are three ways to architect your database in a multi-tenant system. A single, shared database schema. A schema is a layout for database tables that relate to each other. In the first approach, one database is used with tenant tables all linked to the database.

This section outlines the installation choices and different scenarios associated with copying and moving pluggable databases introduced by the Oracle Database 12c or later multitenant architecture with respect to Oracle Application Express (Application Express). The concept is based on having one single system with a system database that keeps the system-wide landscape information and which allows configuration and monitoring of the overall system.

From architectural point of view, SAP HANA multiple container system have one system database for central system administration and additional multitenant database containers called tenant databases. Note that when an SAP HANA system installed in multiple container mode, it will have only one system ID (SID) and tenant databases are identified by a SID and database name. One database per tenant.

Shared database, one schema per tenant. A tenant identifier (tenant key) associates every row with the right tenant.

MSDN has a good article on the pros and cons of each design, and examples of implementations.