DAP Relational Database Server II

From OPeNDAP Documentation
⧼opendap2-jumptonavigation⧽

Introduction

Previous Design/Implementation

Data model representation

Atomic (Simple) Types

Table Test 1

Transact-SQL (Microsoft)
Type Range Storage Bytes DAP equiv.
bigint 8 bytes none
int 4 bytes
numeric
decimal
bit
smallint 2 bytes
tinyint 1 bytes
smallmoney
money
float 4 or 8 bytes
real 4 bytes
date
datetimeoffset
datetime2
smalldatetime
datetime
time
char
varchar
next
nchar
nvarchar
ntext
binary
varbinary
image
cursor
timestamp
hierarchyid
uniquieidentifier
sql_variant
xml
table

Table test 2

PostgreSQL Data Types (from Practical PostgreSQL)
Catagory Data Type Description Standardization Logical DAP data type association.
Boolean and binary types
boolean, bool
bit(n)
bit varying(n), varbit(n)
A single true or false value.
An n -length bit string (exactly n binary bits).
A variable n -length bit string (up to n binary bits)
SQL99
SQL92
SQL92
Boolean
None
None

Desired Features

Implementation Target