DDL

美 　英

• n.二極管二極管邏輯電路
• 網(wǎng)絡(luò)數(shù)據(jù)定義語言(Data Definition Language)；資料定義語言；數(shù)據(jù)描述語言(data description language)

英漢解釋

n.	1. 二極管二極管邏輯電路

例句

For this reason, all DDL statements (and a few other statements as well) are recorded before they are attempted.

因此，所有DDL語句（以及其它幾個語句）都在被嘗試之前記錄下來。

With a few clicks you are able to get the Physical Data Model of a DB2 and the DDL scripts to create the tables.

通過一些簡單的點(diǎn)擊操作，您就能夠得到DB2的物理數(shù)據(jù)模型以及DDL腳本來創(chuàng)建數(shù)據(jù)表。

A DDL Trigger can fire after execution of any Transact-SQL event that belongs to a predefined grouping of similar events.

可以在執(zhí)行屬于一組預(yù)定義的相似事件的任何Transact-SQL事件后觸發(fā)DDL觸發(fā)器。

This can help isolate the effects of DDL changes to only those applications that use parts of that changed schema.

這有助于將DDL更改的效果局限到那些使用那個已更改的架構(gòu)的部分的應(yīng)用程序。

A physical data model can be used to generate data definition language (DDL) statements which can then be deployed to a database server.

可以使用物理數(shù)據(jù)模型來生成數(shù)據(jù)定義語言（DDL）語句，然后可以將這些語句部署到一個數(shù)據(jù)庫服務(wù)器上。

If you generate a Java stored procedure, it has a DDL tab and a Java tab, as shown in Figure 8.

如果您生成了一個Java存儲程序，將會有一個DDL選項(xiàng)卡和一個Java選項(xiàng)卡，如圖8所示。

Is the name of a Transact-SQL language event that, after execution, causes a DDL trigger to fire.

執(zhí)行之后將導(dǎo)致激發(fā)DDL觸發(fā)器的Transact-SQL語言事件的名稱。

Optionally, data modeler can transform a LDM into a physical database schema and DDL using Rational Data Architect.

數(shù)據(jù)建模師還可以選擇使用RationalDataArchitect將LDM轉(zhuǎn)換為一個物理數(shù)據(jù)庫模式和DDL。

The DDL trigger fires after execution of any Transact-SQL language event that belongs to event_group.

執(zhí)行任何屬于event_group的Transact-SQL語言事件之后，都將激發(fā)DDL觸發(fā)器。

The next step in creating the stored procedure is to issue the CREATE PROCEDURE DDL to register the procedure in the database.

創(chuàng)建存儲過程的下一步是執(zhí)行CREATEPROCEDUREDDL，在數(shù)據(jù)庫中注冊該存儲過程。

However, when you deploy to production, you will include the GRANT statements in the same DDL as you use to create the database structure.

然而，當(dāng)您部署到生產(chǎn)數(shù)據(jù)庫時，您將在用來創(chuàng)建數(shù)據(jù)庫結(jié)構(gòu)的同一個DDL中使用這些GRANT語句。

During DDL replay, the default schema is overridden to the target schema if it matches the source schema.

在DDL重新執(zhí)行期間，如果默認(rèn)模式與源模式匹配，那么它被改為目標(biāo)模式。

For more information about this task, see Analysis Services Execute DDL Task.

有關(guān)此任務(wù)的詳細(xì)信息，請參閱AnalysisServices執(zhí)行DDL任務(wù)。

DDL triggers do not fire in response to events that affect local or global temporary tables and stored procedures.

對于影響局部或全局臨時表和存儲過程的事件，不會觸發(fā)DDL觸發(fā)器。

The sample code provides the Data Definition Language (DDL) and Integration Exchange Format (IXF) files which make up the structure.

該樣本代碼提供了組成該結(jié)構(gòu)的數(shù)據(jù)定義語言（DataDefinitionLanguage，DDL）和集成交換格式（IntegrationExchangeFormat，IXF）文件。

You can select the tables that you want to migrate and extract the DDL into a file.

此時可以選擇所要遷移的表，并將DDL提取到一個文件。

Added an important note that recommends testing DDL triggers to determine their responses to system stored procedures that are executed .

添加了一個重要通知，該通知建議測試DDL觸發(fā)器以確定其對所執(zhí)行系統(tǒng)存儲過程的響應(yīng)。

You can determine the types of locks being used from the Data Definition Language (DDL) schema files used to create the database.

根據(jù)創(chuàng)建數(shù)據(jù)庫所使用的數(shù)據(jù)定義語言（DDL）模式文件，可以確定正在使用的鎖類型。

Event notifications do not fire if the event in the corresponding DDL statement is rolled back.

如果回滾相應(yīng)DDL語句中的事件，則事件通知不會觸發(fā)。

You can reverse engineer your database into a model using a DDL file or from the database itself.

可以對DDL文件或數(shù)據(jù)庫本身進(jìn)行反向工程，生成數(shù)據(jù)模型。

The catalog views and system stored procedures listed in this section can be used to get information about DDL Triggers.

本節(jié)列出的目錄視圖和系統(tǒng)存儲過程可用于獲取有關(guān)DDL觸發(fā)器的信息。

Like their relational counterparts, these new XML indexes are created with a familiar SQL DDL statement: CREATE INDEX.

與關(guān)系索引相似，這些新的XML索引也是用熟悉的SQLDDL語句創(chuàng)建的：CREATEINDEX。

Browse to the location of the DDL file, and select the options for how you want your diagram to look.

瀏覽到DDL文件的位置并選擇設(shè)置圖表外觀的選項(xiàng)。

DBLookTask. java: provides access to the dblook command-line utility which allows DDL to be exported for a given database.

java：提供對dblook命令行實(shí)用程序的訪問，該實(shí)用程序允許導(dǎo)出用于給定數(shù)據(jù)庫的DDL。

Lists index DDL operations that do and do not require additional temporary disk space.

列出需要和不需要額外臨時磁盤空間的索引DDL操作。

Trace events generated by DDL are always generated, regardless of whether the DDL statement is rolled back.

無論是否回滾DDL語句，都將始終生成DDL生成的跟蹤事件。

This task does absolutely nothing more than output the DDL for a database to a file.

該任務(wù)惟一要做的就是將一個數(shù)據(jù)庫的DDL輸出到文件中。

SQL has two main components: a Data Definition Language (DDL) and a Data Manipulation Language (DML).

SQL有兩個主要部分：數(shù)據(jù)定義語言（DDL）和數(shù)據(jù)操縱語言（DML）。

Registered custom stored procedure or script is executed at the end of the data definition language (DDL) trigger .

DDL觸發(fā)器激發(fā)存儲過程以響應(yīng)各種數(shù)據(jù)定義語言（DDL）事件。

Modifies the definition of a DML, DDL, or logon trigger that was previously created by the CREATE TRIGGER statement.

修改CREATETRIGGER語句以前創(chuàng)建的DML、DDL或登錄觸發(fā)器的定義。

Other DDL operations against the index may cause the value of the statistics to be reset to zero.

對索引執(zhí)行的其他DDL操作可能導(dǎo)致統(tǒng)計(jì)信息的值被重置為零。

DDL triggers can be used to audit or regulate changes to a database schema.

DDL觸發(fā)器可用于審核或控制對數(shù)據(jù)庫架構(gòu)的更改。

As it traverses through the XML schema, it also creates the DDLs for the relational schema.

當(dāng)它穿過XML模式時，也創(chuàng)建用于關(guān)系模式的DDL。

When invoked from a particular object node, it displays the DDL used to create that particular object.

當(dāng)從某個特定對象節(jié)點(diǎn)調(diào)用時，將顯示用于創(chuàng)建該對象的DDL。

The Data Definition Language (DDL) part of SQL permits database tables to be created or deleted.

數(shù)據(jù)定義語言（DDL）為SQL中的一部分，可以讓數(shù)據(jù)表建立或是刪除。

Following best practices, the database for a messaging engine is created by executing a generated DDL script.

按照最佳實(shí)踐，消息傳遞引擎的數(shù)據(jù)庫是通過執(zhí)行生成的DDL腳本創(chuàng)建的。

Multiple DDL triggers can be dropped per DROP TRIGGER statement only if all triggers were created using identical ON clauses.

僅當(dāng)所有觸發(fā)器均使用相同的ON子句創(chuàng)建時，才能使用一個DROPTRIGGER語句刪除多個DDL觸發(fā)器。

However, concurrent DDL operations, and concurrent DML operations that acquire Sch-M locks, cannot be performed on the table.

但是，無法針對表執(zhí)行獲取Sch-M鎖的并發(fā)DDL操作和并發(fā)DML操作。

The result of the db2look call is a file sales. ddl containing the CREATE TABLE statement for table SALES.

db2look調(diào)用的結(jié)果是sales.ddl文件，其中包含SALES表的CREATETABLE語句。

As a result of the last action, the table is dropped from the PDP schema, and the option to generate left delta DDL is enabled (Figure 42).

最后，表被從PDP模式中刪除，并且generateleftdeltaDDL選項(xiàng)被啟用（圖42）。