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Cho hoán vị 1 2 3 4 5 3 2 4 5 1 Khi giải mã bản mã "LIKSM" theo mã hoán vị ta sẽ thu được bản rõ nào sau đây ? A) milks B) millkf C) milkh D) millk Cho hoán vị 1 2 3 4 5 4 1 5 3 2 Khi giải mã bản mã "LSLIT" theo mã hoán vị ta sẽ thu được bản rõ nào sau đây ? A) stell B) still C) stoll D) stall Cho hoán vị 1 2 3 4 5 1 3 2 4 5.... The following shows use cases for placing an order. When placing an Order, it is necessary to supply, customer information, information about the ordered products and arrangements for mode of payment (can be credit or cash). Most of the time, the customers are sure about the products to be ordered, but, sometimes, they request for a product catalogue. The use cases participate in relationships between themselves (A to F). Select the relationship of A a. iv b. i c. ii d. iii...... The following shows use cases for placing an order. When placing an Order, it is necessary to supply, customer information, information about the ordered products and arrangements for mode of payment (can be credit or cash). Most of the time, the customers are sure about the products to be ordered, but, sometimes, they request for a product catalogue. The use cases participate in relationships between themselves (A to F)....... System study is the ____ stage of system development life cycle. a. First b. Second c. Last d. None of these answers.... The dotted line below the boxes is called the ____ . a. controller line b. boundary line c. actor line d. Idelien..... The following is a Class draw using UML notations SetPosition(service) is a. protected b. public c. none of the other answers d. private..... In the UML-style entity class ORDERS shown above, "GetOrderNo( )" is a (n) ____ . a. public constraint b. public method c. protected method d. private method..... In the UML-style entity class ORDERS, "SumOfOrders" is ____. a. a method b. a constraint c. a class attribute d. an entity attribute........In UML, an abstract class is: a. A class that cannot have instances b. A class that inherits nothing from other classes c. A class with no attributes.... Consider the table ACCOUNTS (AccountNo, Name, TimeStamp, Balance, Address), with the following functional dependencies: (primary key of this table is [AccountNo, TimeStamp] ) AccountNo -> Name, Address (AccountNo, TimeStamp) -> Balance What is the HIGHEST normal mform that this table, ACCOUNTS, is now in? a. BCNF b. None of the others answers c. 2NF d. 3NF..... In Data Flow Diagram, SOURCE a. represents a table within a database. It cannot transform data, and usually contains one inflow and one outflow. A store should be named with a noun that reflects its purpose. b. indicates a flow of data(but not physical objects, such as a book). It should connect at each end directly to its source and destination with one arrowhead, and should not cross other arrows. c. provides the inflow to a process. It should be named as a person, place or thing. A source can only be connected a process....... Which of the following addresses the rules concerning the relationships between entity types? a. triggering operations b. entity integrity c. referential integrity constraints d. domains ........ Which of the following is not a logic model? a. Structured English b. decision tables c. data flow diagrams d. decision trees...... Use Case Model provides: a. None of these answers b. blacks-box c. Outside-in view of system functionality d. All of these answers...... Use Case Model consists of: a. Actors b. Use Cases c. Relationships d. All of these answers....... Using relational notation, an attribute of relation that is the primary key of another relation is indicated by: a. italics..... The diagram that shows the scope of the system, indicating what elements are inside and which are outside the system, is called a: a. level-2 diagram b. referencing diagram c. context diagram d. representative diagram....... Two entities can be related as One-to-one (1:1): a. An instance of entity A can relate to one and only one instance of entity B and an instance of B can relate to only one instance of A. For example, a husband can have only one wife, and a wife can have only one husband. b. a. An instance of entity A can relate to one or more instance of B while an instance od B can relate to one or more instances of A. For example, an uncle can have many nephews, and a nephew can have many uncles. c. None of these answers........ In collaborative requirements gathering, the facilitator a. cannot be a member of the software team b. cannot be a customer c. controls and facilitates the process d. must be an outsiderCâu...... In DATA FLOW DIAGRAMS, symbol in picture are a. PROCESS b. DATAF LOW c. STORE d. SOURCE........ If entity B is a mandatory participant, then: a. the minimum cardinality of the relationship optional........ Components of a decision tree include: a. decidion points b. states c. rules d. stubs......ow: a. is not have name b. must have a name c. sometime have a name d. none of these answer...... Data flow diagrams that concentrate on the movement of data between processes are referred to as: a. data models b. flow charts c. process models d. flow models........ |