db: improved listing of db/base exports in docs

collects/db/scribblings/connect.scrbl

@@ -9,13 +9,13 @@
 
 @title[#:tag "connect"]{Connections}
 
-@(declare-exporting db)
-
 This section describes functions for creating connections as well as
 administrative functions for managing connections.
 
 @section[#:tag "creating-connections"]{Base Connections}
 
+@declare-exporting[db]
+
 Base connections are made using the following functions.
 
 @defproc[(postgresql-connect [#:user user string?]
@@ -304,6 +304,8 @@ Base connections are made using the following functions.
 
 @section{Connection Pooling}
 
+@declare-exporting[db db/base]
+
 Creating a database connection can be a costly operation; it may
 involve steps such as process creation and SSL negotiation. A
 @deftech{connection pool} helps reduce connection costs by reusing
@@ -379,6 +381,8 @@ a transaction, the transaction is rolled back.
 
 @section{Virtual Connections}
 
+@declare-exporting[db db/base]
+
 A @deftech{virtual connection} creates actual connections on demand and
 automatically releases them when they are no longer needed.
 
@@ -468,6 +472,8 @@ execute parameterized queries expressed as strings or encapsulated via
 
 @section[#:tag "kill-safe"]{Kill-safe Connections}
 
+@declare-exporting[db db/base]
+
 @defproc[(kill-safe-connection [c connection?]) 
          connection?]{
 
@@ -486,6 +492,8 @@ shutting down its ports.
 
 @section{Data Source Names}
 
+@declare-exporting[db db/base]
+
 A DSN (data source name) is a symbol associated with a connection
 specification in a DSN file. They are inspired by, but distinct from,
 ODBC's DSNs.
@@ -623,6 +631,8 @@ ODBC's DSNs.
 
 @section[#:tag "managing-connections"]{Mangaging Connections}
 
+@declare-exporting[db db/base]
+
 @defproc[(connection? [x any/c])
          boolean?]{
 

collects/db/scribblings/query.scrbl

@@ -10,7 +10,7 @@
 
 @title[#:tag "query-api"]{Queries}
 
-@declare-exporting[db]
+@declare-exporting[db db/base]
 
 This library provides a high-level functional query API,
 unlike many other database libraries, which present a stateful,

collects/db/scribblings/sql-types.scrbl

@@ -10,7 +10,7 @@
 
 @title[#:tag "sql-types"]{SQL Types and Conversions}
 
-@declare-exporting[db]
+@declare-exporting[db db/base]
 
 Connections automatically convert query results to appropriate Racket
 types. Likewise, query parameters are accepted as Racket values and

collects/db/scribblings/util.scrbl

@@ -9,7 +9,7 @@
 @title[#:tag "util"]{Utilities}
 
 The bindings described in this section are provided by the specific
-modules below, not by @racketmodname[db].
+modules below, not by @racketmodname[db] or @racketmodname[db/base].
 
 @;{========================================}