cardinality
美 
英 [kɑ?d?'næl?t?]
- n.〔數(shù)〕基數(shù)
- 網(wǎng)絡(luò)基數(shù)性；勢(shì)；基數(shù)或勢(shì)
英漢解釋
例句
Call a set of integers fat if each of its elements is at least as large as its cardinality.
稱一個(gè)整數(shù)的集合為飽和的，如果它的每一個(gè)元素都至少不小于其基數(shù)。
You may have noticed that the query access plan itself did not change with the increase in cardinality estimate.
您可能已經(jīng)注意到了，查詢訪問計(jì)劃本身并未隨著基數(shù)估計(jì)值的增大而改變。
The optimizer depends on accurate cardinality estimates to properly compute the cost of each query access plan considered.
優(yōu)化器憑借精確的基數(shù)估計(jì)值來準(zhǔn)確計(jì)算出每一個(gè)待定查詢訪問計(jì)劃的成本。
As mentioned, the cardinality of the address containment within a contact is assumed by the Relational DAS to be one-to-many.
剛才已經(jīng)提到，聯(lián)系人中地址包容的二元關(guān)系由關(guān)系型DAS假定為一對(duì)多的關(guān)系。
Notice that there is a significant difference between the cardinality shown in the fetch node on the outer side of the join in Figure 7.
請(qǐng)注意在圖7中聯(lián)接的外部Fetch節(jié)點(diǎn)上所顯示的基數(shù)之間有一個(gè)顯著的不同。
Generate the access plan and see what the optimizer estimates the total cardinality (Number of rows) returned by the query will be.
生成訪問計(jì)劃，查看優(yōu)化器對(duì)該查詢返回的總基數(shù)（行數(shù)）的估計(jì)值。
When examining an access plan, you may find that the estimated cardinality is not as accurate as it should be.
在分析訪問計(jì)劃時(shí)，可能會(huì)發(fā)現(xiàn)與集的基數(shù)不像希望的那樣精確。
In real-life scenarios, typically the cardinality of an output structure in a message will mirror the cardinality of an input structure.
在真實(shí)的場(chǎng)景中，輸出結(jié)構(gòu)的基數(shù)通常等于輸入結(jié)構(gòu)的基數(shù)。
Correlated subqueries are often used to test whether relationships exist without regard to cardinality.
相關(guān)性查詢通常用于測(cè)試某種關(guān)系是否存在，而不管返回記錄集的大小，
Distinct cardinality is the number of distinct values in a column of a row set.
不同的行集數(shù)是在列行集上的不同的數(shù)值。
I would not mind seeing a later revision of RELAX NG that incorporates more flexible cardinality constraints .
我不會(huì)介意以后看到合并了更靈活的基數(shù)約束的RELAXNG修訂版。
Give lower priority to operators that do not change the cardinality of the plan.
為不改變計(jì)劃基數(shù)的操作分配較低的優(yōu)先級(jí)。
Element , however, lets you intersperse patterns while obeying the cardinality of each contained pattern .
元素允許您在遵守所包含的每個(gè)模式的基數(shù)同時(shí)，可以分散排列這些模式。
It has long been understood that cardinality is a core organizing principle of early Chinese cosmological thinking.
在早期中國(guó)的宇宙論思想中劃分四正方向是一個(gè)核心組織原則，這一點(diǎn)早已得到認(rèn)同。
The product of individual column cardinalities is compared to the cardinality of the column group to get better correlation estimates.
較于列組的基數(shù)，單個(gè)列的基數(shù)（cardinality）的乘積將獲得更好的相關(guān)性估計(jì)。
Because there are no additional predicates to be applied by the fetch operation, the output cardinality of the fetch node is also eight.
因?yàn)?/c>這里沒有通過提取操作應(yīng)用附加的謂詞，所以提取節(jié)點(diǎn)的輸出基數(shù)也是8個(gè)。
In addition to the cardinality information, the properties of a role establish how the two entities behave in relation to each other.
除基數(shù)信息外，角色的屬性還確定了兩個(gè)實(shí)體相互間的行為方式。
Strive for no more than one call after a single cardinality find on a home, or a next on an iterator retrieved from a collection.
在本機(jī)上找到一個(gè)基數(shù)，或者通過迭代器從集合中檢索到下一個(gè)基數(shù)后，盡量使用不超過一個(gè)調(diào)用。
Configuration variable included type variable, property variable, port variable and cardinality variable.
配置變量分為類型變量、屬性變量、接口變量、基數(shù)變量四種類型；
If table statistics are not available, then the estimator uses the number of extents occupied by the table to estimate the base cardinality.
如果表統(tǒng)計(jì)數(shù)據(jù)是無效的，那么估計(jì)器使用占用的表擴(kuò)展來估計(jì)基本的行集數(shù)。
XML Schema allows enforcement of specified ordering, cardinality, and data types within a schema instance.
XML模式允許在一個(gè)模式實(shí)例中使用指定順序、基數(shù)（cardinality）和數(shù)據(jù)類型。
The cardinality of the input schema can determine if multiple values can be selected.
輸入模式中的基數(shù)決定是否可以選擇多個(gè)值。
The cardinality estimate is slightly higher than the actual value of 4 since the column group statistic is a uniform distribution statistic.
由于列組統(tǒng)計(jì)信息是一個(gè)均勻分布的統(tǒng)計(jì)信息，所以基數(shù)估計(jì)值比實(shí)際值4稍高了一些。
You use the radio buttons on this page of the wizard to specify the cardinality of the relationship.
使用向?qū)?/c>此頁的單選按鈕指定關(guān)系的基數(shù)性。
However, the memory allocated for an array is based on its cardinality, and not on the maximum cardinality of its type.
然而，陣列的已分配內(nèi)存是基于其基數(shù)的，而不是基于其類型的最大基數(shù)。
The cardinality represents the estimated number of rows returned from the access plan operator.
基數(shù)（cardinality）表示訪問計(jì)劃操作符所返回的行的估計(jì)數(shù)目。
This paper mainly concerns the construction of one-dimension non measurable set and the cardinality of its class.
該文主要探討一維不可測(cè)集的構(gòu)造以及一維不可測(cè)集全體所組成的類的勢(shì)。
This is actually the per-partition cardinality estimate, and not the total cardinality.
這實(shí)際上是每個(gè)分區(qū)的基數(shù)估計(jì)值，不是完整的基數(shù)。
The same cardinality estimate is carried up, and no counts are needed for these two operators.
同樣進(jìn)行基數(shù)估計(jì)，但是這兩個(gè)操作不需要計(jì)數(shù)。
This example illustrates the effect that partial statistics have on the ability of the optimizer to estimate the cardinality.
這個(gè)示例解釋說明了部分統(tǒng)計(jì)信息對(duì)于優(yōu)化器估計(jì)基數(shù)的能力的影響。
The candidate key of minimum cardinality problem was pointed out to be NP-complete in literature [1], [2], and [3].
文獻(xiàn)[1]、[2]、[3]均明確指出，求一個(gè)關(guān)系模式的最小基數(shù)候選關(guān)鍵字問題是一個(gè)NP完全問題。
Given that the table cardinality is about 50000; it should not be a performance disaster, either.
假設(shè)表基數(shù)大約是50000；這也將會(huì)是性能上的災(zāi)難。
Function CARDINALITY, used in line 15, returns the number of elements in the input array.
函數(shù)CARDINALITY用于第15行，返回輸入陣列中的元素數(shù)量。
With three predicates applied in the WHERE clause, assuming they are independent results in the optimizer underestimating the cardinality.
在WHERE子句中應(yīng)用了三個(gè)謂詞，如果假設(shè)它們是獨(dú)立的話，會(huì)導(dǎo)致優(yōu)化器低估基數(shù)。
Operators whose cardinality in the plan remains the same can be skipped in the interim.
可以暫時(shí)跳過計(jì)劃中基數(shù)不變的操作。
The cardinality estimate of 7 does not match the actual result of 12.
基數(shù)估計(jì)值7與實(shí)際結(jié)果12不符。
The higher the cardinality, the more probes into the inner table, one per qualifying (outer) record.
基數(shù)越高，進(jìn)入內(nèi)部表、每一條合格的（外部）記錄的探測(cè)就越多。
Contrast that with CUST_INTEREST, in which the number of qualified rows is the same as the cardinality (31, 255).
與CUST_INTEREST相比，符合條件的行數(shù)與基數(shù)一樣（31,255）。
To enter the array index information select the Inline map and select the Cardinality tab in the Properties pane.
要輸入數(shù)組索引信息，請(qǐng)選擇Inlinemap并在Properties窗格中選擇Cardinality選項(xiàng)卡。
The value of the second argument to TRIM_ARRAY must be a value between 1 and the cardinality of the first argument.
針對(duì)TRIM_ARRAY的第二個(gè)參數(shù)的值必須是1和第一個(gè)參數(shù)的基數(shù)之間的值。
