A table of contents for the analysis of the database system engineer exam test site and the detailed

The database system engineer morning exam is a basic knowledge subject, and the exam question type is an objective multiple-choice question, with a total of 75 multiple-choice questions, 1 point for each question, and a total score of 75 points, and the passing standard is basically stable at 45 points.

The morning exam subjects for intermediate database system engineers in the soft exam are basic knowledge, and the question type is objective multiple-choice questions, with a total of 75 multiple-choice questions. The database system engineer exam needs to pass all subjects in one exam to be considered passed, and the passing results of a single subject will not be retained, nor can they be transferred to the next exam. Slim.

Database System Engineer Exam Question Types for Each Subject.

1) Knowledge of information systems, the exam time is 150 minutes, written test, multiple-choice questions;

2) Database system design and management, the examination time is 150 minutes, written test, question and answer questions.

The following is a free introduction to the content of the review materials: The first half of 2023 Information System Supervisor Study Manual.

Format: DO size: The first few pages of the software designer exam in the second half of 2022.

Format: do size:

If you have any questions about the qualification exam, don't know how to summarize the content of the test center, and don't know the local policies for the exam, click on the bottom to consult the Liekao website to get the review materials for free.

The morning exam for the system engineer of the data fiber database is a basic knowledge subject, including 75 objective multiple-choice questions, each question is worth 1 point, and the total score is 75 points. The Database Systems Engineer Fundamentals exam is held from 9:00 a.m. to 11:30 a.m. and lasts 150 minutes.

The Database Systems Engineer consists of two exam subjects, one in the morning and one in the afternoon, with the morning exam being the basic knowledge subject. The basic knowledge test is an objective multiple-choice question, with a total of 75 multiple-choice questions, 1 point for each sub-question, and a total score of 75 points, and the passing standard is basically stable at 45 points.

The case analysis of the database system engineer in the afternoon is a question and answer question, including a number of big questions, each big question is divided into a number of small questions, and the score of each small question is different.

Database system engineers need to pass both subjects to be considered qualified, and the passing results of a single subject will not be retained, nor can they be transferred to the next exam.

Format: zip size: Embedded Systems Designer Study Program 2023.

Format: do size:

If you have any questions about the qualification exam, don't know how to summarize the content of the exam, and don't know the local policy for applying for the exam, click on the bottom to consult the liekao website and get the review materials for free.

Suppose a hard disk is composed of 5 platters (a total of 8 recording surfaces), the outer diameter of the effective recording area of the disk is 30cm, the inner diameter is 10cm, the recording bit density is 250 bit mm, the track density is 16 mm, and each track is divided into 16 sectors, each sector is 512 bytes, then the formatted capacity of the hard disk is about (2) MB.

3) refers to the memory that is accessed by content.

3）a.Virtual Memory BAssociated memory.

c.Cache dRandom Access Memory Read the following instructions, questions 1 and 2, and fill in the answers in the corresponding fields on the answer sheet.

Note] Suppose that a large commercial enterprise consists of a commodity distribution center and a supermarket chain, and the commodity distribution center includes procurement, finance, distribution, and other departments. In order to achieve efficient management, the information management system of commodity distribution center is designed, and its main functions are described as follows:

1.The system receives the supply request made by the supermarket chain and records it to the supply request record file.

2.After receiving the supply request, the product inventory information query is carried out from the product inventory record file. If the inventory satisfies the supply request, a delivery notification is sent to the delivery process; Otherwise, a stock-out notice is sent to the purchasing department.

3.After receiving the delivery notice, the delivery processing inquires about the supply request record file, updates the product inventory record file, and sends a delivery note to the delivery department, and records the delivery information to the product delivery record file at the same time as the goods are delivered.

4.After receiving the notice of out-of-stock, the purchasing department negotiates with the supplier, carries out the purchase of goods, puts the qualified goods into the warehouse, records the purchase list to the purchase list record file, sends a delivery notice to the distribution process, and notifies the financial department to pay the supplier at the same time. The system was developed using a structured approach to obtain the data flow diagram to be modified (as shown in Figure 1-1).

Question 1] (8 points).

Using the words in Description, give the names of the external entities e1 through e4 and the names of the data store d1 through d4 in Figure 1-1.

Question 2] (7 points).

There are four error data streams in Figure 1-1, please indicate the start and end points of each; If the above four incorrect data streams are deleted, in order to ensure the correctness of the data flow diagram, three data streams should be supplemented, and the starting point and end point of the supplemented data flow should be given. (Please use the symbols or names in Data Flow Diagram 1-1 for the starting and ending points) Database system engineer 2009 first half soft exam questions, please refer to References for details.

1d (external mode, like a specific application, such as word 360, etc.) mode (or temporary mode) is the pattern of the outer mode, if you don't understand it like this, how does word 360 come out, isn't it just to follow a certain pattern, so the outer pattern and the pattern produce a map, the inner pattern is the source of the pattern, so the pattern and the inner pattern produce a mapping (in fact, to understand it).

－－－1: d.Mode.

2: a.Any two rows in a table cannot be the same.

3: c.Concurrency control.

4:5: d.Management of data.

6: c.Conception.

7: b.Data Structure, Data Manipulation, Integrity Constraints8: bApplication.

9: c.Master code.

10: b.Connect.

11:12: c.Retaining a small amount of redundant data can improve query speed.