Article directory Database integrity 1. Entity integrity 1. Define entity integrity 2. Entity integrity check and breach handling 2. Referential integrity 1. Define referential integrity 2. Reference integrity check and default conditions 3. Constraints on attributes 1. Definition of constraints on attributes 2. Inspection of constraints on attributes and handling of breaches 4. Integrity constraint […]
Tag: integrity
How to disable SIP system integrity protection? SIP system integrity shutdown method
Original link: How to disable SIP system integrity protection? SIP system integrity shutdown method – FCPX template station Many Mac users report that after installing some software, they are prompted that there is no mountable file system (or other). It may be that the SIP system integrity is not turned off. Let’s take a look […]
django.db.utils.IntegrityError: (1048, “Column ‘spu_id’ cannot be null”) About RESTframework using serializer error…
ERROR exception 132 Internal Server Error: /meiduo_admin/goods/specs/ Traceback (most recent call last): File “D:\python_learn\meiduo_project\env\lib\site-packages\django\db\backends\utils.py”, line 64, in execute return self.cursor.execute(sql, params) File “D:\python_learn\meiduo_project\env\lib\site-packages\django\db\backends\mysql\base.py”, line 101, in execute return self.cursor.execute(query, args) File “D:\python_learn\meiduo_project\env\lib\site-packages\pymysql\cursors.py”, line 170, in execute result = self._query(query) File “D:\python_learn\meiduo_project\env\lib\site-packages\pymysql\cursors.py”, line 328, in _query conn.query(q) File “D:\python_learn\meiduo_project\env\lib\site-packages\pymysql\connections.py”, line 517, in query self._affected_rows = self._read_query_result(unbuffered=unbuffered) […]
Kernel IO stack | Bounce buffer, bio segmentation, integrity protection and current storage
line17 ※1 Bounce buffer The function of the blk_queue_bounce function is to try to create a bounce buffer. It is usually necessary to create such a special area when the memory area given by bio is at an address that is not reachable by the peripheral device (such as performing DMA on high-end memory) to […]
02｜One-way hash function: How to ensure information integrity?
Starting today, I will gradually get into contact with the specific details of cryptography with you. In this process, I will talk about many concepts and demands related to cryptography, which is the key for us to lay a good foundation. However, you don’t need to be nervous, I will analyze it with you and […]
Signal Integrity: Crosstalk Delay and Crosstalk Noise-3
?Continued from the previous article Signal Integrity: Crosstalk Delay and Crosstalk Noise-2 8, Crosstalk Noise Overview Crosstalk Noise is generally called Static noise. It is called static because its analysis does not rely on test vectors or circuit simulation to determine the behavior of the circuit. It corresponds to static timing analysis. Determining factors generally […]
Signal Integrity: Crosstalk Delay and Crosstalk Noise-2
Continuing from the previous article Dongpo Jushi, public account: Dongpo Jushi Signal Integrity: Crosstalk Delay and Crosstalk Noise-1 3. Multiple-Clock Domains Victim Nets analysis principles For nets on the clock network, PTSI will calculate the delta delay under each clock separately. That is to say, there is a delta delay under the CLK1 domain, but […]
[Spring] In-depth analysis of Spring transactions: revealing the powerful engine behind data integrity
Article directory 1. Transaction overview 2. The way Spring implements transactions 2.1 Declarative transaction 2.2 Programmatic transactions 2.3 Annotation transaction 3. Isolation level of Spring transaction 4. Propagation method of Spring transaction 5. Failure scenarios of Spring transactions 1. Transaction overview In MySQL, a transaction is a collection of database operations that either all commit […]
Use java to implement file integrity program based on CS mode SHA-256 algorithm
Directory 0x01 Basic requirements of the program 0x02 implementation code 0x03 Effect display 0x04 Summary 0x01 Program Basic Requirements The software includes client and server, client implementation files Hash Value calculation, received by the server files and Hash value for file integrity verification. The specific functions of the software are as follows: ( 1 ) […]
[Oracle] Experiment 11: Integrity Management
Examination content 1. Connection information detection, the requirements are as follows: 1) Ensure that the first listening port configured on the server side in the second experiment can work normally, 2) Ensure that the session can be successfully created using the fifth service name configured by the client in the second experiment. 2. Create the […]