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NEW QUESTION: 1
Hinweis: Diese Frage ist Teil einer Reihe von Fragen, die dasselbe Szenario verwenden. Zur Vereinfachung wird das Szenario in jeder Frage wiederholt. Jede Frage stellt ein anderes Ziel und eine andere Antwortauswahl dar, aber der Text des Szenarios ist in jeder Frage dieser Reihe genau gleich.
Sie haben eine Datenbank, die die folgenden Tabellen enthält: BlogCategory, BlogEntry, ProductReview, Product und SalesPerson. Die Tabellen wurden mit den folgenden Transact SQL-Anweisungen erstellt:

Sie müssen die ProductReview-Tabelle ändern, um die folgenden Anforderungen zu erfüllen:
* Die Tabelle muss auf die ProductID-Spalte in der Product-Tabelle verweisen
* Vorhandene Datensätze in der ProductReview-Tabelle müssen nicht mit der Product-Tabelle validiert werden.
* Das Löschen von Datensätzen in der Product-Tabelle ist nicht zulässig, wenn die ProductReview-Tabelle auf Datensätze verweist.
* Änderungen an Datensätzen in der Product-Tabelle müssen in die ProductReview-Tabelle übernommen werden.
Sie haben auch die folgenden Datenbanktabellen: Order, ProductTypes und SalesHistory. Die Transact-SQL-Anweisungen für diese Tabellen sind nicht verfügbar.
Sie müssen die Orders-Tabelle ändern, um die folgenden Anforderungen zu erfüllen:
* Erstellen Sie neue Zeilen in der Tabelle, ohne der Tabelle INSERT-Berechtigungen zu erteilen.
* Benachrichtigen Sie den Verkäufer, der eine Bestellung aufgibt, ob die Bestellung abgeschlossen wurde oder nicht.
Sie müssen der SalesHistory-Tabelle die folgenden Einschränkungen hinzufügen:
* Eine Einschränkung für die Spalte "SaleID", mit der das Feld als Datensatzkennung verwendet werden kann
* Eine Konstante, die die ProductID-Spalte verwendet, um auf die Product-Spalte der ProductTypes-Tabelle zu verweisen
* Eine Einschränkung für die CategoryID-Spalte, die eine Zeile mit einem Nullwert in der Spalte zulässt
* Eine Einschränkung, die die Spalte "SalePrice" auf Werte beschränkt, die größer als vier Benutzer der Finanzabteilung sind, muss in der Lage sein, Daten aus der Tabelle "SalesHistory" für Verkäufer abzurufen, bei denen der Wert der Spalte "SalesYTD" über einem bestimmten Schwellenwert liegt.
Sie planen, eine speicheroptimierte Tabelle mit dem Namen SalesOrder zu erstellen. Die Tabelle muss folgende Anforderungen erfüllen:
* Die Tabelle muss 10 Millionen eindeutige Kundenaufträge enthalten.
* Die Tabelle muss Prüfpunkte verwenden, um E / A-Vorgänge zu minimieren, und darf keine Transaktionsprotokollierung verwenden.
* Datenverlust ist akzeptabel.
Die Leistung für Abfragen in der SalesOrder-Tabelle, die Where-Klauseln mit exakten Gleichheitsoperationen verwenden, muss optimiert werden.
Sie müssen die referenzielle Integrität für die ProductReview-Tabelle aktivieren.
Wie müssen Sie die entsprechende Transact-SQL-Anweisung ausfüllen? Antworten? Wählen Sie die entsprechenden Transact-SQL-Segmente im Antwortbereich aus.
Wählen Sie zwei Alternativen.
A. Für die zweite Auswahl wählen Sie: ON DELETE CASCADE ON UPDATE NO ACTION
B. Für die erste Auswahl wählen Sie: WITH NOCHECK
C. Für die erste Auswahl wählen Sie: WITH CHECK
D. Für die zweite Auswahl wählen Sie: ON DELETE CASCADE ON UPDATE CASCADE
E. Für die zweite Auswahl wählen Sie: ON DELETE NO ACTION ON UPDATE NO ACTION
F. Für die zweite Auswahl wählen Sie: ON DELETE NO ACTION ON UPDATE CASCADE
Answer: B,F
Explanation:
Explanation
B: We should use WITH NOCHECK as existing records in the ProductReview table must not be validated with the Product table.
C: Deletes should not be allowed, so we use ON DELETE NO ACTION.
Updates should be allowed, so we use ON DELETE NO CASCADE
NO ACTION: the Database Engine raises an error, and the update action on the row in the parent table is rolled back.
CASCADE: corresponding rows are updated in the referencing table when that row is updated in the parent table.
Note: ON DELETE { NO ACTION | CASCADE | SET NULL | SET DEFAULT }
Specifies what action happens to rows in the table that is altered, if those rows have a referential relationship and the referenced row is deleted from the parent table. The default is NO ACTION.
ON UPDATE { NO ACTION | CASCADE | SET NULL | SET DEFAULT }
Specifies what action happens to rows in the table altered when those rows have a referential relationship and the referenced row is updated in the parent table. The default is NO ACTION.
Note: You must modify the ProductReview Table to meet the following requirements:
1. The table must reference the ProductID column in the Product table
2. Existing records in the ProductReview table must not be validated with the Product table.
3. Deleting records in the Product table must not be allowed if records are referenced by the ProductReview table.
4. Changes to records in the Product table must propagate to the ProductReview table.
References: https://msdn.microsoft.com/en-us/library/ms190273.aspx
https://msdn.microsoft.com/en-us/library/ms188066.aspx

NEW QUESTION: 2
Which integrity model defines a constrained data item, an integrity verification procedure and a transformation procedure?
A. The Bell-LaPadula integrity model
B. The Take-Grant model
C. The Biba integrity model
D. The Clark Wilson integrity model
Answer: D
Explanation:
Explanation/Reference:
Explanation:
When an application uses the Clark-Wilson model, it separates data into one subset that needs to be highly protected, which is referred to as a constrained data item (CDI), and another subset that does not require a high level of protection, which is called an unconstrained data item (UDI). Users cannot modify critical data (CDI) directly. Instead, the subject (user) must be authenticated to a piece of software, and the software procedures (Transformation Procedures) will carry out the operations on behalf of the user. For example, when Kathy needs to update information held within her company's database, she will not be allowed to do so without a piece of software controlling these activities. First, Kathy must authenticate to a program, which is acting as a front end for the database, and then the program will control what Kathy can and cannot do to the information in the database.
Incorrect Answers:
A: The take-grant protection model is used to establish or disprove the safety of a given computer system that follows specific rules. This is not what is described in the question.
B: The Biba Model is a formal state transition system of computer security policy that describes a set of access control rules designed to ensure data integrity. However, it does not define a constrained data item and a transformation procedure.
C: The Bell-LaPadula model does not deal with integrity.
References:
Harris, Shon, All In One CISSP Exam Guide, 6th Edition, McGraw-Hill, New York, 2013, p. 374

NEW QUESTION: 3
The optdiag utility can NOT be used to[]_____
A. flush table/index statistics
B. alter index statistics
C. display table statistics
D. simulate histogram statistics
Answer: D