3.1 CRUD 操作概觀

CRUD 操作以方法的形式提供，這些方法在綱要物件上運作。可用的綱要物件包含包含文件的集合物件，或包含列和包含文件的集合的表格物件。

下表顯示集合和表格物件可用的 CRUD 操作。

操作

文件

關聯式

建立

第 4.3.1 節，〈Collection.add()〉

Table.insert()

讀取

第 4.3.2 節，〈Collection.find()〉

Table.select()

更新

第 4.3.3 節，〈Collection.modify()〉

Table.update()

刪除

第 4.3.4 節，〈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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