Jin, X., Zhang, Z., Wang, J., Li, D.: Watermarking spatial trajectory database. In: Proceedings of DASFAA (2005)X. Jin, Z. Zhang, J. Wang, and D. Li, "Watermarking spatial trajectory database," in Database Systems for Advanced Applications, Springer Berlin Heidelberg. Jan. 2005, ...
For the first approach, the design pattern is a predefined generic schema that can be connected to any other database schema by the designer and can be modifiable. In fact the designer can modify the design pattern by adding new elements or semantic attributes, deleting other ones to adapt ...
A trajectory dataset is a geodatabase that manages a collection of trajectory files. It contains a polygon feature table that stores the spatial extent or footprint of each trajectory file, along with sensor properties, such as start time, end time, and the measurement or variable names. The...
A dataset can be created using the Create Trajectory Dataset tool, which builds a container in a geodatabase to store the footprint geometries, metadata, and references for the trajectory files. Trajectory files and selected variables can then be added to the empty trajectory dataset using the ...
Fast and precise querying in a given set of trajectory points is an important issue of trajectory query. Typically, there are massive trajectory data in the database, yet the query sets only have a few points, which is a challenge for the superior performance of trajectory querying. The curre...
如果要对整个数据默认采用lz4压缩算法,设置方法如下: -- 数据库使用lz4压缩AlterdatabasedbnameSettoast_compression_use_lz4 =true;-- 数据库使用默认压缩AlterdatabasedbnameSettoast_compression_use_lz4 =false;
如果要对整个数据库默认采用lz4压缩算法,设置方法如下: -- 数据库使用lz4压缩 Alter database dbname Set toast_compression_use_lz4 = true; -- 数据库使用默认压缩 Alter database dbname Set toast_compression_use_lz4 = false; 上一篇:OSS存储下一篇:SQL参考手册 ...
Conf. on Database System for Advanced Application, Kyoto, Japan, 2003 [20] Ye Xiaorong, Shao Qing. Mobile Advertising System Based on Augmented Reality and Location-Based Services[J]. <em>Science and Technology Review</em>, 2013, 31(4):67-73(叶小榕,邵晴.基于增强现实和位置服务的手机广告...
Firstly, this study relies on retrospective data collected from a prospective database. While this approach allows for comprehensive analysis of admitted patients, it is subject to potential biases such as coding errors or missing data. Despite efforts to minimize these biases by excluding patients wi...
LabelExplanationData Type Output Location The geodatabase where the trajectory dataset will be stored. Workspace Trajectory Dataset Name The name of the trajectory dataset that will be created. String Coordinate System The spatial reference of the trajectory dataset that will be created. ...