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1. Create a "student" table StudentCREATE TABLE Student_muanfeng (Sno Char (4) primary key (primary key),Sname char unique (for constraint),Ssex char (2) null check (Sex in (' M ', ' F ')),Sage smallint null check (AGE>18 and ageSdept Char (20));2. Create a "course" table courseCreate Table Course (Cno char (4) Primary

_ (self, stackList): self. stackList = stackList def push (self, topItem): self. stackList. append (topItem) print 'item', topItem, 'is pushed on the top of Stack. 'print 'the updated Stack is: ', self. stackList, '\ n' def popvalue (self): if findPop () = True: topItem = self. stackList. pop () print 'item', topItem, 'has been poped. 'print 'the updated Stack is: ', self. stackList, '\ n' else: topItem = self. stackList. pop [-1] print 'item', topItem, 'has been poped. 'self. stackList = self.

Experimental Report of Nanjing University of Information EngineeringExperiment name Class and Object 2 experimental date 2018-4-17 score Guide Teacher Shan Department of Soft College professional embedded + soft-embedded grade 2017 shift (1) name Schhao Yang School number 20161334026 First, the purpose of the experiment Mastering the design, definition, implementation,

2-3-4 trees and red/black trees may look completely different. However, in a sense, the two are exactly the same. There is a data item and two subnodes are called 2-nodes. There are two data items and three sub-nodes called 3-nodes. Three data items and four subnodes are called 4-nodes. Rules for converting fro

Output an M * n matrix arranged according to the following rules.1 6 72 5 83 4 9 Analysis: The key is to find out the matrix rules. on the Internet, the analysis is as follows: Set behavior I, column J 1 2 M 2 m + 1 4 M 4 m + 1 6 m ..

[Switch] Problem:An array a [1 .. n] contains all from 0 .. all integers of N, but one of them is not in the array .. n] to record the integers in.O (n) Time to find the missing integer. However, in this case, we cannot use a single operation to access a complete integer in A, because the elements in a are represented in binary. The only operation we can useThe operation is to take the J-bits of a [I] and the time taken is constant. Proof: if the only way to access the information in array A Is

Oracle learning notes 4 SQL commands (2): SQL operation language category, oracle learning notes SQL is classified into the following language categories1. Data Definition Language (DDL)Create, Alter, Drop 2. Data manipulation language (DML)Insert, Select, Delete, Update 3. Transaction Control Language (TCL)Commit, Savepoint, and Rollback

MPEG-4 Part 2,MPEG-4 visual(Formally ISO/IEC 14496-2[1]) is a video compression technology developed by MPEG. it belongs to the MPEG-4 ISO/IEC standards. it is a discrete cosine transform compression standard, similar to previous standards such as MPEG-1 and MPEG-

as hardware raid, and features are not as good as hardware raid. Next we will introduce various RAID technologies I. RAID 0 The band technology is used to write data in parallel on multiple disks in bytes or bits (the starting offset of each disk is the same, and the subsequent segments of a certain number of bytes, i/O read/write performance can be improved, but it does not have data redundancy like raid1. Once the hard disk fails, it will be done. The structure is as follows. Ii. Raid 1 The

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It took two days to complete the 2-3-4 tree summary. Program -- Inserts a 2-3-4 tree. The main reason for this long time is that many detours have been taken and some common-sense errors have been made. To prevent such errors from being repeated, this note is used to deepen your impression. First of all, I did not und

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