Pervasive PSQL

Pervasive PSQL is a relational database developed by Pervasive Software mostly used as an embedded database. Originally, the product name was Btrieve and it was written by Doug and Nancy Woodward.

Btrieve was acquired by Novell in 1987, but spun off in 1994 as a new company called Btrieve Technologies (led by Doug and Nancy Woodward and Ron Harris). Btrieve Technologies was later renamed to Pervasive Software. Pervasive’s greatest strength is reliability. It has been continuously on the market for 30 years and customers report no operational problems with it. While other databases are better-known, Pervasive, being an embedded database, gets less public attention. However, it’s extremely popular and successful. Pervasive Software has 3500 partners worldwide, including 200 OEMs.

Pervasive PSQL has two database engines - a relational engine (which allows you to use SQL to work with the database) and a transactional engine (also known as the MicroKernel Database Engine or MKDE, which allows you to go directly to the database and bypass SQL altogether). MKDE guarantees a valid database state even in the event of power loss.

Pervasive PSQL data types we support

Integral:

bigint (int8)integer (identity)smallint (smallidentity)tinyintubigintuintegerusmallintutinyint

Decimal:

decimal (numeric, numericsa, numericsts)double (real, bfloat8)float (bfloat4)money ()

Text:

char (bpchar)longvarcharnvarcharvarchar

Binary:

binarybit

Date/Time:

datedatetimetimetimestamp

Large objects:

longvarbinarylongvarchar

Other:

uniqueidentifier