3.1 CRUD 操作概述

CRUD 操作以方法的形式提供，這些方法作用於綱要物件。可用的綱要物件包含含有文件的集合物件，或包含列的資料表物件，以及含有文件的集合。

下表顯示集合和資料表物件可用的 CRUD 操作。

操作

文件

關聯式

建立

章節 4.3.1，「Collection.add()」

Table.insert()

讀取

章節 4.3.2，「Collection.find()」

Table.select()

更新

章節 4.3.3，「Collection.modify()」

Table.update()

刪除

章節 4.3.4，「Collection.remove()」

Table.delete()

資料庫物件類別

圖 3.1 資料庫物件 - 類別圖

The DatabaseObject class contains the following general functions: getSession(): XSessionObj, getSchema(): SchemaObj, getName(): String, existsInDatabase(): Boolean|Unknown. The Schema class contains the following functions: getCollections() and getTables() are browse functions. getCollection(): CollectionObj, getTable(): TableObj, and getCollectionAsTable(): TableObj are DbObject instance functions. createCollection() is a create function. The Collection class contains the following functions: add(): CollectionInsertObj, find(): CollectionFindObj, modify(): CollectionUpdateObj, and remove(): CollectionDeleteObj are CRUD functions. createIndex(), dropIndex(), and getIndexes() are index functions. newDoc() and count(): Integer are document and structure functions. The Table class contains the following functions: insert(): InsertObj, select(): SelectObj, update(): UpdateObj, and delete(): DeleteObj are relational SQL CRUD functions. dropIndex() and getIndexes() are index functions. count(): Integer is a general function.


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