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Polyhedra 8.3: Some SQL enhancements and streaming output from historian. Polyhedra 8.4: performance enhancements; 2011 Polyhedra 8.5: better integration with 3rd-party tools, and improved performance on Windows. Replica servers can be used in a fan-out configuration for better scaling. 2012 Polyhedra 8.6: 64-bit integer data type.
Views take very little space to store; the database contains only the definition of a view, not a copy of all the data that it presents. Views structure data in a way that classes of users find natural and intuitive. [2] Just as a function (in programming) can provide abstraction, so can a database view. In another parallel with functions ...
A database trigger is procedural code that is automatically executed in response to certain events on a particular table or view in a database. The trigger is mostly used for maintaining the integrity of the information on the database. For example, when a new record (representing a new worker) is added to the employees table, new records ...
Rdb is built on top of a low-level database kernel named KODA, which handles functionality such as locking, journaling, and buffering of data. [12] The KODA kernel is shared with Oracle's CODASYL DBMS (originally known as VAX DBMS) which is a network model database.
TINYINT (8-bit), SMALLINT (16-bit), INTEGER (32-bit), BIGINT (64-bit) REAL (32-bit), DOUBLE (aka FLOAT) (64-bit) N/A CHAR, VARCHAR, NVARCHAR: N/A DATE, DATETIME (aka TIMESTAMP) BOOL: N/A Type system Integer Floating point Decimal String Binary Date/Time Boolean Other Teradata: Static BYTEINT (8-bit), SMALLINT (16-bit), INTEGER (32-bit), BIGINT ...
In relational databases, the log trigger or history trigger is a mechanism for automatic recording of information about changes inserting or/and updating or/and deleting rows in a database table. It is a particular technique for change data capturing , and in data warehousing for dealing with slowly changing dimensions .
Yes - user manager with support for database and schema permissions as well as for individual object (table, view, functions) permissions; Some - simple user manager with support for database and schema permissions; No - no user manager, or read-only user manager
Zen supports stand-alone, client-server, peer-to-peer [7] and software-as-a-service (SaaS) [8] architecture. The central architecture of Zen consists of two database engines: (1) the storage engine, known as MicroKernel Database Engine (MKDE) and described as a transactional database engine, and (2) the relational database engine, known as SQL Relational Database Engine (SRDE).