Updating the prepost plane in monetdbxquery

Recent research [1] showed a clear advantage of the former for efficient evaluation of XPath location steps, exploiting techniques like cheap node order tests, positional lookup, and node skipping in staircase join [7].

However, once updates are involved, variable-length surrogates are often considered the better choice, mainly as a straightforward implementation of structural XML updates using fixed-length surrogates faces two performance bottlenecks: (i) high physical cost (the preorder ranks of all nodes following the update position must be modified—on average 50% of the document), and (ii) low transaction concurrency (updating the size of all ancestor nodes causes lock contention on the document root)., 10.1007/11687238_89, Lecture Notes in Computer Science, vol. 1190-1193, 10th International Conference on Extending Database Technology, EDBT 2006, Munich, Germany, ; Manegold, Stefan; Mullender, Sjoerd; Rittinger, Jan; Teubner, Jens. 1190-1193 10.1007/11687238_89 (Lecture Notes in Computer Science; Vol. TY - GENT1 - Monet DB/XQuery - Consistent & Efficient Updates on the Pre/Post Plane AU - Boncz, Peter AU - Flokstra, Jan AU - Grust, Torsten AU - van Keulen, Maurice AU - Manegold, Stefan AU - Mullender, Sjoerd AU - Rittinger, Jan AU - Teubner, Jens N1 - Imported from EWI/DB PMS [db-utwente:inpr:0000003685], demo paper.

A: Most Nastran bulk data is converted to LS-DYNA keyword data with a few exceptions.

Using the Page1 Color Interface, each model can be assigned a unique color to help identify differences.Proceedings of the 10th International Conference on Extending Database Technology (EDBT 2006). PY - 2006/3Y1 - 2006/3N2 - Relational XQuery processors aim at leveraging mature relational DBMS query processing technology to provide scalability and efficiency.However, once updates are involved, variable-length surrogates are often considered the better choice, mainly as a straightforward implementation of structural XML updates using fixed-length surrogates faces two performance bottlenecks: (i) high physical cost (the preorder ranks of all nodes following the update position must be modified—on average 50% of the document), and (ii) low transaction concurrency (updating the size of all ancestor nodes causes lock contention on the document root).A: The Page1 History Interface is for plotting time histories of nodes, elements, materials (parts), and global data.This data can be from d3plot, d3thdt, or d3iff files which are binary files output by LS-DYNA. Time histories with respect to rotating coordinate frames have to be requested as LS-DYNA output using *DATABASE_HISTORY_LOCAL or *ELEMENT_SEATBELT_ACCELEROMETER and *DATABASE_NODOUT in LS-DYNA input files.

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This can be done while d3plot files are loaded for post-processing. It allows users to define variables that can be assigned other keywords.

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