Afternoon test questions, in addition to master the corresponding knowledge points, but also to master some problem-solving skills, because the afternoon of the more fixed question type.

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Test questions one basically is to want to read the topic carefully, do not have too much fixed method and skill, can do this topic carefully read the description in the explanation is very important, the effective method that raises is to do some of the topic more.

Question 1: It is usually a fixed question type. Use the words in the instructions to give the names of the entities in the figure En~Em.

Question 2: It is usually a fixed question type. Use the words in the description to name the data storage Dn to Dm in the figure. Questions 1 and 2 can start by identifying the names of all entities and data stores in the description, and then selecting the most likely answer using elimination. Choose the name according to the meaning of the sentence in the description. Do not choose which name you think is good. Use the name of the sentence that explains the function of the original text. Problem 2: The name of the data store should be followed by a table, XX table. If you are not sure what to write, you can use the name of the input data stream preferentially (if it is in the instructions).

Question 3: It is usually a fixed question to supplement the missing data flow and its starting and ending points in the figure. This topic can be supplemented according to the three principles of data flow graph drawing: (1) Each process has at least one input data flow and one output data flow. (2) check whether the input of processing is enough to produce output. (3) An input stream flowing into the processing disappears after processing, and some of its data (or all of the data) may flow to other processing or external entities, which may be the loss of output data stream. Another way is to check whether the data flow graph is balanced.

Question 4: Generally, there is no fixed question type, but the question type is relatively similar, among which the high-frequency test point is how to keep the data flow graph balance in Figure 1 and Figure 2.

Item 2

Question 1: Generally, it is a fixed question type, supplemented by entity connection diagrams.

Question 2: Generally, it is a fixed question type, supplementary relationship model. If there is a relational schema for fields to be filled in, the primary key name of that relational schema is preferred. A blank may require more than one field!

Sometimes there is no question 4, but the content of the test will not be less, because there will be two small questions in one question without question 4, and there will still be four questions in the second test. For questions 3 and 4, although they are not fixed, they can be prepared for the high-frequency test points. The high-frequency test types of this part are as follows: 1. The primary key and foreign key of the so-and-so relationship model are given.

Item 3

Question 1: it is usually given some names of the first graph, which is not fixed. It may be a state graph or a use case graph. Don’t forget to pay attention to the relationships between the boxes that need to be filled in.

Topic 2: the type of question is not fixed, and the difficulty is a little more than the other two questions, but don’t worry, the score is usually relatively small among the three questions.

Question 3: Generally, it is a fixed question, give the class name corresponding to x~x in the picture, and the class name of the answer is a noun. You can first pay attention to the relationship between the classes to be filled in, and fill in the corresponding noun in the explanation, but a few nouns in the answer can not be found in the explanation.

Item 4

Question 1: Generally fixed question type, supplement C code.

According to the description and C code, the design strategy adopted by the algorithm is… . I really don’t know what to write about dynamic programming.

Problem 3: unfixed question type.

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