搜索结果: 1-15 共查到“DBMS”相关记录15条 . 查询时间(0.07 秒)
COMPARATIVE ANALYSIS OF DATA STRUCTURES FOR STORING MASSIVE TINS IN A DBMS
Massive point clouds TINs
2016/7/8
Point cloud data are an important source for 3D geoinformation. Modern day 3D data acquisition and processing techniques such as airborne laser scanning and multi-beam echosounding generate billions o...
Malicious-Client Security in Blind Seer: A Scalable Private DBMS
secure computation implementation private database
2016/1/5
The Blind Seer system (Oakland 2014) is an efficient and scalable DBMS that affords both client query privacy and server data protection. It also provides the ability to enforce authorization policies...
3D Spatial Operations for Geo-DBMS - Geometry VS. Topology
Spatial Database Geometry Query Three-dimensional GIS
2015/12/2
Geo-DBMS becomes very important medium for GIS as it can handle and manage (e.g. retrieve and update) large volume of spatial data. Providing 3D spatial database with appropriate operation tools such ...
FREEFORM CURVES AND SURFACES IN DBMS: A STEP FORWARD IN SPATIAL DATA INTEGRATION
Databases CAD GIS
2015/8/28
Spatial data integration is of great importance for many applications and particularly for emergency response. Besides the variety of
challenges in 2D, increasing attention is given to integration of...
MANAGEMENT AND 3D VISUALIZATION OF PIPELINE NETWORKS USING DBMS AND AEC SOFTWARE
Databases CAD GIS
2015/8/28
Management and visualization of underground utilities have been always of a great concern in many countries. Insufficient,
inaccurate and unclear information about location and depth of cables and pi...
Multiple Representations In Dbms: Two Algorithms
Databases Generalization Framework Data structures
2015/7/6
Spatial data sets are created to provide information for specific applications. These sets are representations of real world objects and
are each collected by specific organisations for specific purp...
INCORPORATING 3D SPATIAL OPERATOR WITH BUILDING INFORMATION MODELS IN CONSTRUCTION MANAGEMENT USING GEO-DBMS
Construction Management 3D spatial operator BIM 3D-GIS
2014/6/11
With the advances in the field of information technologies, construction industry has started taking advantages some of these developments. GIS is the tool used to manage construction...
基于DBMS的元数据管理策略
海量存储系统 元数据管理 数据库管理技术
2010/8/31
海量存储系统的元数据一般采用层次结构或哈希法来管理，存在元数据修改和查询目录等操作所需时间和空间开销大等问题，严重影响了系统的性能。通过引入二维表保存元数据信息，提出了一种基于DBMS的新型元数据管理策略。分析了将基于DBMS元数据管理策略用于管理海量存储系统中的元数据信息时，所需的时空开销以及管理元数据的灵活性。验证了基于DBMS元数据管理策略能有效地减少查询和更新所需的时空开销，实现高效、灵活...
基于可信验证的DBMS访问控制模型
可信操作环境 访问控制 可信验证
2009/6/25
针对目前访问控制模型在系统的安全实现方面存在的不足，在RABC的基础上，提出了可信操作环境下基于可信验证的DBMS访问控制模型，该模型满足系统的保密性和完整性需求，最大程度实现信息双向流动，同时支持最小特权安全特性，是一个权限分配灵活的访问控制模型。
数据库管理系统DBMS
DBMS 数据库管理系统
2008/8/26
由清华大学国家CAD支撑软件工程技术研究中心和高华公司开发“高华二维产品设计与绘图系统GHMDS4.0”中面向产品和工程设计与绘图的集成系统。通过提供参数化、智能设计、全程导航等先进技术及符合国家标准的机械、电气等标准件库，使广大工程设计人员稍加培训即可灵活应用。基于GHMDS支撑平台，用户可自定制全中文界面，可根据应用需要进行二次开发。
在传统的数据库恶意事务修复方案的基础上，采用Petri网模型分析事务撤销冲突和操作执行序列异常检测；进而结合可生存性DBMS特征提出恶意事务静态和on-the-fly修复算法，并在此基础上给出随机Petri网恶意事务修复模型；在分析恶意事务修复随机Petri网模型和连续时间Markov链的一致性后，给出了连续时间Markov链的恶意事务修复模型求解.
数据库安全与操作系统安全密不可分，如果多级安全DBMS的安全策略不违反OS的安全策略，那么可以使用多级安全OS的安全机制来实现DBMS的部分安全功能，如强制访问控制.信息流分析使我们能更好地理解安全策略的意义和内容.该文给出了多级安全OS模型和以该模型为基础的多级安全DBMS模型，首次详细分析了它们在强制访问控制策略下的信息流集合.经过主客体的映射后，证明了数据库与操作系统的信息流集合是一致的，这...
多级安全DBMS的通用审计策略模型
2007/11/2
He YZ, Li L, Feng DG. A generic audit policy model on multilevel secure DBMS.
Journal of Software, 2005,16(10):1774-1783.DOI:
10.1360/jos161774 http://www.jos.org.cn/1000-9825/16/1774.htm摘要
提出...
Information modeling of dangerous freight transportation regulations for database management systems (DBMS)
dangerous freight transportation regulations database management systems
2010/11/4
Dangerous freight transportation regulations are modelled in the article. Formal lists of subregulations are made. They include classes of dangerous substances, special and general subregulation lists...