-
操作系统中的文件是通过文件目录项来管理的,为了管理和查找的方便,按层次把文件目录项组织起来,同一层上的目录构成该层上的目录,第一层为根目录,一下为各层子目录。...
操作系统中的文件是通过文件目录项来管理的,为了管理和查找的方便,按层次把文件目录项组织起来,同一层上的目录构成该层上的目录,第一层为根目录,一下为各层子目录。 假设以一串字符代表一个文件,每个字符表示一个记录。 在建立上述目录结构的基础上,建立相应的管理系统并要求完成以下各项操作: 1. 一次建立各个文件 2. 查访两个用户的所有文件 3. 查访用户sun 是否有文件AB 4. 删除用户sun的文件AC,然后在分别查访两个用户的全部文件,检查是否已经删除文件AC 5. 撤销用户sun,并检查是否被删除 6. 删除用户sun的全部文件,然后在撤销sun用户,在查访用户sun, 检查其是否已被撤销。 在建立一个新用户及新用户的两个文件,然后查该两个用户的所有文件-operating system, the paper is to document catalog items to the management, in order to manage and facilitate the search, according to the document level directory entries organizations, the same floor on which constitute the directory contents on the floor, the first layer of the root directory to look for levels of subdirectories. Assuming that the representative of a string of characters, each character expressed a record. In establishing the directory structure on the basis of the establishment of a corresponding system of management and asked to accomplish the following : 1. Once established two separate files. Visits to the two users of all three docum
- 2022-01-26 01:47:05下载
- 积分:1
-
Oracle training in 18 days the teacher
Oracle培训18天老师的笔记,对学习oracle数据库有非常大的帮助-Oracle training in 18 days the teacher
- 2023-01-22 08:25:04下载
- 积分:1
-
一种基于二维链表的稀疏矩阵模半板类设计
A template Class of sparse matrix.
Key technology: bin,2...
一种基于二维链表的稀疏矩阵模半板类设计
A template Class of sparse matrix.
Key technology: bin,2-m linked matrix.
constructors: 1.normal constuctor 2.copy constuctor. 3.assignment constructor.
Basic operator: 1. addition(sub) of two matrix
2. inverse of a matrix.
3. multiply of two matrix.
etc.-based on two-dimensional chain of sparse matrix model semi-plate design of Class A"s template parse matrix. Key technology : bin. 2-m linked matrix. constructors : 1.normal constuctor 2.copy constuctor. 3.ass ignment constructor. Basic operator : 1. addition (sub) 2 matrix of two. inverse of a ma trix. 3. multiply of two matrix. etc
- 2023-03-19 06:15:03下载
- 积分:1
-
学院管理体制
在这些高校管理体系中包含各种搜索老师记录,学生记录,这样,轻松地访问任何信息等。
- 2022-02-20 04:24:35下载
- 积分:1
-
用于对计算机等级考试所需的数据库的查询和存储
用于对计算机等级考试所需的数据库的查询和存储-used for computer examination of the necessary inquiries and database storage
- 2022-12-02 14:05:03下载
- 积分:1
-
algorithms and data structures, C
算法与数据结构,C语言版严蔚敏,清华大学出版社-algorithms and data structures, C-language version of Yan Wei Min, Qinghua University Press
- 2022-04-02 08:39:03下载
- 积分:1
-
in their procedures completed SQK2K the database backup and recovery. Although t...
在自己的程序中完成SQK2K中的数据库的备份和恢复。虽然调用外部程序来完成,但是在自己的MEMO窗口中显示外部程序的字符界面输出。-in their procedures completed SQK2K the database backup and recovery. Although the call external procedures to be completed, but in their own MEMO window shows the characters external program interface output.
- 2022-01-22 14:39:36下载
- 积分:1
-
Visual.C.实践与提高数据库篇.pdf
大家参考下。
Visual.C.实践与提高数据库篇.pdf
大家参考下。-Visual.C. Practice and improve database articles. Pdf we refer to the following.
- 2022-08-13 12:01:34下载
- 积分:1
-
asp access database develepment
asp access数据库开发实例,分后台和前台-asp access database develepment
- 2022-01-28 12:05:43下载
- 积分:1
-
Chap4 Sting
《数据结构与算法》讲义,第4章 字符串。
“十一五”国家级规划教材。张铭,王腾蛟,赵海燕,《数据结构与算法》,高教社,2008. 6。-Chap4 Sting
- 2022-06-14 05:18:01下载
- 积分:1